package org.hl7.fhir.dstu3.model;



/*
  Copyright (c) 2011+, HL7, Inc.
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:
  
   * Redistributions of source code must retain the above copyright notice, this 
     list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright notice, 
     this list of conditions and the following disclaimer in the documentation 
     and/or other materials provided with the distribution.
   * Neither the name of HL7 nor the names of its contributors may be used to 
     endorse or promote products derived from this software without specific 
     prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
  POSSIBILITY OF SUCH DAMAGE.
  
*/

// Generated on Fri, Mar 16, 2018 15:21+1100 for FHIR v3.0.x
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.hl7.fhir.dstu3.model.Enumerations.PublicationStatus;
import org.hl7.fhir.dstu3.model.Enumerations.PublicationStatusEnumFactory;
import org.hl7.fhir.exceptions.FHIRException;
import org.hl7.fhir.utilities.Utilities;

import ca.uhn.fhir.model.api.annotation.Child;
import ca.uhn.fhir.model.api.annotation.ChildOrder;
import ca.uhn.fhir.model.api.annotation.Description;
import ca.uhn.fhir.model.api.annotation.ResourceDef;
import ca.uhn.fhir.model.api.annotation.SearchParamDefinition;
/**
 * The Library resource is a general-purpose container for knowledge asset definitions. It can be used to describe and expose existing knowledge assets such as logic libraries and information model descriptions, as well as to describe a collection of knowledge assets.
 */
@ResourceDef(name="Library", profile="http://hl7.org/fhir/Profile/Library")
@ChildOrder(names={"url", "identifier", "version", "name", "title", "status", "experimental", "type", "date", "publisher", "description", "purpose", "usage", "approvalDate", "lastReviewDate", "effectivePeriod", "useContext", "jurisdiction", "topic", "contributor", "contact", "copyright", "relatedArtifact", "parameter", "dataRequirement", "content"})
public class Library extends MetadataResource {

    /**
     * A formal identifier that is used to identify this library when it is represented in other formats, or referenced in a specification, model, design or an instance. e.g. CMS or NQF identifiers for a measure artifact. Note that at least one identifier is required for non-experimental active artifacts.
     */
    @Child(name = "identifier", type = {Identifier.class}, order=0, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=true)
    @Description(shortDefinition="Additional identifier for the library", formalDefinition="A formal identifier that is used to identify this library when it is represented in other formats, or referenced in a specification, model, design or an instance. e.g. CMS or NQF identifiers for a measure artifact. Note that at least one identifier is required for non-experimental active artifacts." )
    protected List<Identifier> identifier;

    /**
     * Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.
     */
    @Child(name = "type", type = {CodeableConcept.class}, order=1, min=1, max=1, modifier=false, summary=true)
    @Description(shortDefinition="logic-library | model-definition | asset-collection | module-definition", formalDefinition="Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/library-type")
    protected CodeableConcept type;

    /**
     * Explaination of why this library is needed and why it has been designed as it has.
     */
    @Child(name = "purpose", type = {MarkdownType.class}, order=2, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Why this library is defined", formalDefinition="Explaination of why this library is needed and why it has been designed as it has." )
    protected MarkdownType purpose;

    /**
     * A detailed description of how the library is used from a clinical perspective.
     */
    @Child(name = "usage", type = {StringType.class}, order=3, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Describes the clinical usage of the library", formalDefinition="A detailed description of how the library is used from a clinical perspective." )
    protected StringType usage;

    /**
     * The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.
     */
    @Child(name = "approvalDate", type = {DateType.class}, order=4, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="When the library was approved by publisher", formalDefinition="The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage." )
    protected DateType approvalDate;

    /**
     * The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.
     */
    @Child(name = "lastReviewDate", type = {DateType.class}, order=5, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="When the library was last reviewed", formalDefinition="The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date." )
    protected DateType lastReviewDate;

    /**
     * The period during which the library content was or is planned to be in active use.
     */
    @Child(name = "effectivePeriod", type = {Period.class}, order=6, min=0, max=1, modifier=false, summary=true)
    @Description(shortDefinition="When the library is expected to be used", formalDefinition="The period during which the library content was or is planned to be in active use." )
    protected Period effectivePeriod;

    /**
     * Descriptive topics related to the content of the library. Topics provide a high-level categorization of the library that can be useful for filtering and searching.
     */
    @Child(name = "topic", type = {CodeableConcept.class}, order=7, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="E.g. Education, Treatment, Assessment, etc", formalDefinition="Descriptive topics related to the content of the library. Topics provide a high-level categorization of the library that can be useful for filtering and searching." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/definition-topic")
    protected List<CodeableConcept> topic;

    /**
     * A contributor to the content of the library, including authors, editors, reviewers, and endorsers.
     */
    @Child(name = "contributor", type = {Contributor.class}, order=8, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="A content contributor", formalDefinition="A contributor to the content of the library, including authors, editors, reviewers, and endorsers." )
    protected List<Contributor> contributor;

    /**
     * A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.
     */
    @Child(name = "copyright", type = {MarkdownType.class}, order=9, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Use and/or publishing restrictions", formalDefinition="A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library." )
    protected MarkdownType copyright;

    /**
     * Related artifacts such as additional documentation, justification, or bibliographic references.
     */
    @Child(name = "relatedArtifact", type = {RelatedArtifact.class}, order=10, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Additional documentation, citations, etc.", formalDefinition="Related artifacts such as additional documentation, justification, or bibliographic references." )
    protected List<RelatedArtifact> relatedArtifact;

    /**
     * The parameter element defines parameters used by the library.
     */
    @Child(name = "parameter", type = {ParameterDefinition.class}, order=11, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Parameters defined by the library", formalDefinition="The parameter element defines parameters used by the library." )
    protected List<ParameterDefinition> parameter;

    /**
     * Describes a set of data that must be provided in order to be able to successfully perform the computations defined by the library.
     */
    @Child(name = "dataRequirement", type = {DataRequirement.class}, order=12, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="What data is referenced by this library", formalDefinition="Describes a set of data that must be provided in order to be able to successfully perform the computations defined by the library." )
    protected List<DataRequirement> dataRequirement;

    /**
     * The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.
     */
    @Child(name = "content", type = {Attachment.class}, order=13, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Contents of the library, either embedded or referenced", formalDefinition="The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content." )
    protected List<Attachment> content;

    private static final long serialVersionUID = -39463327L;

  /**
   * Constructor
   */
    public Library() {
      super();
    }

  /**
   * Constructor
   */
    public Library(Enumeration<PublicationStatus> status, CodeableConcept type) {
      super();
      this.status = status;
      this.type = type;
    }

    /**
     * @return {@link #url} (An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this library is (or will be) published. The URL SHOULD include the major version of the library. For more information see [Technical and Business Versions](resource.html#versions).). This is the underlying object with id, value and extensions. The accessor "getUrl" gives direct access to the value
     */
    public UriType getUrlElement() { 
      if (this.url == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.url");
        else if (Configuration.doAutoCreate())
          this.url = new UriType(); // bb
      return this.url;
    }

    public boolean hasUrlElement() { 
      return this.url != null && !this.url.isEmpty();
    }

    public boolean hasUrl() { 
      return this.url != null && !this.url.isEmpty();
    }

    /**
     * @param value {@link #url} (An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this library is (or will be) published. The URL SHOULD include the major version of the library. For more information see [Technical and Business Versions](resource.html#versions).). This is the underlying object with id, value and extensions. The accessor "getUrl" gives direct access to the value
     */
    public Library setUrlElement(UriType value) { 
      this.url = value;
      return this;
    }

    /**
     * @return An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this library is (or will be) published. The URL SHOULD include the major version of the library. For more information see [Technical and Business Versions](resource.html#versions).
     */
    public String getUrl() { 
      return this.url == null ? null : this.url.getValue();
    }

    /**
     * @param value An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this library is (or will be) published. The URL SHOULD include the major version of the library. For more information see [Technical and Business Versions](resource.html#versions).
     */
    public Library setUrl(String value) { 
      if (Utilities.noString(value))
        this.url = null;
      else {
        if (this.url == null)
          this.url = new UriType();
        this.url.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #identifier} (A formal identifier that is used to identify this library when it is represented in other formats, or referenced in a specification, model, design or an instance. e.g. CMS or NQF identifiers for a measure artifact. Note that at least one identifier is required for non-experimental active artifacts.)
     */
    public List<Identifier> getIdentifier() { 
      if (this.identifier == null)
        this.identifier = new ArrayList<Identifier>();
      return this.identifier;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setIdentifier(List<Identifier> theIdentifier) { 
      this.identifier = theIdentifier;
      return this;
    }

    public boolean hasIdentifier() { 
      if (this.identifier == null)
        return false;
      for (Identifier item : this.identifier)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public Identifier addIdentifier() { //3
      Identifier t = new Identifier();
      if (this.identifier == null)
        this.identifier = new ArrayList<Identifier>();
      this.identifier.add(t);
      return t;
    }

    public Library addIdentifier(Identifier t) { //3
      if (t == null)
        return this;
      if (this.identifier == null)
        this.identifier = new ArrayList<Identifier>();
      this.identifier.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #identifier}, creating it if it does not already exist
     */
    public Identifier getIdentifierFirstRep() { 
      if (getIdentifier().isEmpty()) {
        addIdentifier();
      }
      return getIdentifier().get(0);
    }

    /**
     * @return {@link #version} (The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.). This is the underlying object with id, value and extensions. The accessor "getVersion" gives direct access to the value
     */
    public StringType getVersionElement() { 
      if (this.version == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.version");
        else if (Configuration.doAutoCreate())
          this.version = new StringType(); // bb
      return this.version;
    }

    public boolean hasVersionElement() { 
      return this.version != null && !this.version.isEmpty();
    }

    public boolean hasVersion() { 
      return this.version != null && !this.version.isEmpty();
    }

    /**
     * @param value {@link #version} (The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.). This is the underlying object with id, value and extensions. The accessor "getVersion" gives direct access to the value
     */
    public Library setVersionElement(StringType value) { 
      this.version = value;
      return this;
    }

    /**
     * @return The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.
     */
    public String getVersion() { 
      return this.version == null ? null : this.version.getValue();
    }

    /**
     * @param value The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.
     */
    public Library setVersion(String value) { 
      if (Utilities.noString(value))
        this.version = null;
      else {
        if (this.version == null)
          this.version = new StringType();
        this.version.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #name} (A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.). This is the underlying object with id, value and extensions. The accessor "getName" gives direct access to the value
     */
    public StringType getNameElement() { 
      if (this.name == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.name");
        else if (Configuration.doAutoCreate())
          this.name = new StringType(); // bb
      return this.name;
    }

    public boolean hasNameElement() { 
      return this.name != null && !this.name.isEmpty();
    }

    public boolean hasName() { 
      return this.name != null && !this.name.isEmpty();
    }

    /**
     * @param value {@link #name} (A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.). This is the underlying object with id, value and extensions. The accessor "getName" gives direct access to the value
     */
    public Library setNameElement(StringType value) { 
      this.name = value;
      return this;
    }

    /**
     * @return A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.
     */
    public String getName() { 
      return this.name == null ? null : this.name.getValue();
    }

    /**
     * @param value A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.
     */
    public Library setName(String value) { 
      if (Utilities.noString(value))
        this.name = null;
      else {
        if (this.name == null)
          this.name = new StringType();
        this.name.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #title} (A short, descriptive, user-friendly title for the library.). This is the underlying object with id, value and extensions. The accessor "getTitle" gives direct access to the value
     */
    public StringType getTitleElement() { 
      if (this.title == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.title");
        else if (Configuration.doAutoCreate())
          this.title = new StringType(); // bb
      return this.title;
    }

    public boolean hasTitleElement() { 
      return this.title != null && !this.title.isEmpty();
    }

    public boolean hasTitle() { 
      return this.title != null && !this.title.isEmpty();
    }

    /**
     * @param value {@link #title} (A short, descriptive, user-friendly title for the library.). This is the underlying object with id, value and extensions. The accessor "getTitle" gives direct access to the value
     */
    public Library setTitleElement(StringType value) { 
      this.title = value;
      return this;
    }

    /**
     * @return A short, descriptive, user-friendly title for the library.
     */
    public String getTitle() { 
      return this.title == null ? null : this.title.getValue();
    }

    /**
     * @param value A short, descriptive, user-friendly title for the library.
     */
    public Library setTitle(String value) { 
      if (Utilities.noString(value))
        this.title = null;
      else {
        if (this.title == null)
          this.title = new StringType();
        this.title.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #status} (The status of this library. Enables tracking the life-cycle of the content.). This is the underlying object with id, value and extensions. The accessor "getStatus" gives direct access to the value
     */
    public Enumeration<PublicationStatus> getStatusElement() { 
      if (this.status == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.status");
        else if (Configuration.doAutoCreate())
          this.status = new Enumeration<PublicationStatus>(new PublicationStatusEnumFactory()); // bb
      return this.status;
    }

    public boolean hasStatusElement() { 
      return this.status != null && !this.status.isEmpty();
    }

    public boolean hasStatus() { 
      return this.status != null && !this.status.isEmpty();
    }

    /**
     * @param value {@link #status} (The status of this library. Enables tracking the life-cycle of the content.). This is the underlying object with id, value and extensions. The accessor "getStatus" gives direct access to the value
     */
    public Library setStatusElement(Enumeration<PublicationStatus> value) { 
      this.status = value;
      return this;
    }

    /**
     * @return The status of this library. Enables tracking the life-cycle of the content.
     */
    public PublicationStatus getStatus() { 
      return this.status == null ? null : this.status.getValue();
    }

    /**
     * @param value The status of this library. Enables tracking the life-cycle of the content.
     */
    public Library setStatus(PublicationStatus value) { 
        if (this.status == null)
          this.status = new Enumeration<PublicationStatus>(new PublicationStatusEnumFactory());
        this.status.setValue(value);
      return this;
    }

    /**
     * @return {@link #experimental} (A boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.). This is the underlying object with id, value and extensions. The accessor "getExperimental" gives direct access to the value
     */
    public BooleanType getExperimentalElement() { 
      if (this.experimental == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.experimental");
        else if (Configuration.doAutoCreate())
          this.experimental = new BooleanType(); // bb
      return this.experimental;
    }

    public boolean hasExperimentalElement() { 
      return this.experimental != null && !this.experimental.isEmpty();
    }

    public boolean hasExperimental() { 
      return this.experimental != null && !this.experimental.isEmpty();
    }

    /**
     * @param value {@link #experimental} (A boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.). This is the underlying object with id, value and extensions. The accessor "getExperimental" gives direct access to the value
     */
    public Library setExperimentalElement(BooleanType value) { 
      this.experimental = value;
      return this;
    }

    /**
     * @return A boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.
     */
    public boolean getExperimental() { 
      return this.experimental == null || this.experimental.isEmpty() ? false : this.experimental.getValue();
    }

    /**
     * @param value A boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.
     */
    public Library setExperimental(boolean value) { 
        if (this.experimental == null)
          this.experimental = new BooleanType();
        this.experimental.setValue(value);
      return this;
    }

    /**
     * @return {@link #type} (Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.)
     */
    public CodeableConcept getType() { 
      if (this.type == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.type");
        else if (Configuration.doAutoCreate())
          this.type = new CodeableConcept(); // cc
      return this.type;
    }

    public boolean hasType() { 
      return this.type != null && !this.type.isEmpty();
    }

    /**
     * @param value {@link #type} (Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.)
     */
    public Library setType(CodeableConcept value)  { 
      this.type = value;
      return this;
    }

    /**
     * @return {@link #date} (The date  (and optionally time) when the library was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.). This is the underlying object with id, value and extensions. The accessor "getDate" gives direct access to the value
     */
    public DateTimeType getDateElement() { 
      if (this.date == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.date");
        else if (Configuration.doAutoCreate())
          this.date = new DateTimeType(); // bb
      return this.date;
    }

    public boolean hasDateElement() { 
      return this.date != null && !this.date.isEmpty();
    }

    public boolean hasDate() { 
      return this.date != null && !this.date.isEmpty();
    }

    /**
     * @param value {@link #date} (The date  (and optionally time) when the library was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.). This is the underlying object with id, value and extensions. The accessor "getDate" gives direct access to the value
     */
    public Library setDateElement(DateTimeType value) { 
      this.date = value;
      return this;
    }

    /**
     * @return The date  (and optionally time) when the library was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.
     */
    public Date getDate() { 
      return this.date == null ? null : this.date.getValue();
    }

    /**
     * @param value The date  (and optionally time) when the library was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.
     */
    public Library setDate(Date value) { 
      if (value == null)
        this.date = null;
      else {
        if (this.date == null)
          this.date = new DateTimeType();
        this.date.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #publisher} (The name of the individual or organization that published the library.). This is the underlying object with id, value and extensions. The accessor "getPublisher" gives direct access to the value
     */
    public StringType getPublisherElement() { 
      if (this.publisher == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.publisher");
        else if (Configuration.doAutoCreate())
          this.publisher = new StringType(); // bb
      return this.publisher;
    }

    public boolean hasPublisherElement() { 
      return this.publisher != null && !this.publisher.isEmpty();
    }

    public boolean hasPublisher() { 
      return this.publisher != null && !this.publisher.isEmpty();
    }

    /**
     * @param value {@link #publisher} (The name of the individual or organization that published the library.). This is the underlying object with id, value and extensions. The accessor "getPublisher" gives direct access to the value
     */
    public Library setPublisherElement(StringType value) { 
      this.publisher = value;
      return this;
    }

    /**
     * @return The name of the individual or organization that published the library.
     */
    public String getPublisher() { 
      return this.publisher == null ? null : this.publisher.getValue();
    }

    /**
     * @param value The name of the individual or organization that published the library.
     */
    public Library setPublisher(String value) { 
      if (Utilities.noString(value))
        this.publisher = null;
      else {
        if (this.publisher == null)
          this.publisher = new StringType();
        this.publisher.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #description} (A free text natural language description of the library from a consumer's perspective.). This is the underlying object with id, value and extensions. The accessor "getDescription" gives direct access to the value
     */
    public MarkdownType getDescriptionElement() { 
      if (this.description == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.description");
        else if (Configuration.doAutoCreate())
          this.description = new MarkdownType(); // bb
      return this.description;
    }

    public boolean hasDescriptionElement() { 
      return this.description != null && !this.description.isEmpty();
    }

    public boolean hasDescription() { 
      return this.description != null && !this.description.isEmpty();
    }

    /**
     * @param value {@link #description} (A free text natural language description of the library from a consumer's perspective.). This is the underlying object with id, value and extensions. The accessor "getDescription" gives direct access to the value
     */
    public Library setDescriptionElement(MarkdownType value) { 
      this.description = value;
      return this;
    }

    /**
     * @return A free text natural language description of the library from a consumer's perspective.
     */
    public String getDescription() { 
      return this.description == null ? null : this.description.getValue();
    }

    /**
     * @param value A free text natural language description of the library from a consumer's perspective.
     */
    public Library setDescription(String value) { 
      if (value == null)
        this.description = null;
      else {
        if (this.description == null)
          this.description = new MarkdownType();
        this.description.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #purpose} (Explaination of why this library is needed and why it has been designed as it has.). This is the underlying object with id, value and extensions. The accessor "getPurpose" gives direct access to the value
     */
    public MarkdownType getPurposeElement() { 
      if (this.purpose == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.purpose");
        else if (Configuration.doAutoCreate())
          this.purpose = new MarkdownType(); // bb
      return this.purpose;
    }

    public boolean hasPurposeElement() { 
      return this.purpose != null && !this.purpose.isEmpty();
    }

    public boolean hasPurpose() { 
      return this.purpose != null && !this.purpose.isEmpty();
    }

    /**
     * @param value {@link #purpose} (Explaination of why this library is needed and why it has been designed as it has.). This is the underlying object with id, value and extensions. The accessor "getPurpose" gives direct access to the value
     */
    public Library setPurposeElement(MarkdownType value) { 
      this.purpose = value;
      return this;
    }

    /**
     * @return Explaination of why this library is needed and why it has been designed as it has.
     */
    public String getPurpose() { 
      return this.purpose == null ? null : this.purpose.getValue();
    }

    /**
     * @param value Explaination of why this library is needed and why it has been designed as it has.
     */
    public Library setPurpose(String value) { 
      if (value == null)
        this.purpose = null;
      else {
        if (this.purpose == null)
          this.purpose = new MarkdownType();
        this.purpose.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #usage} (A detailed description of how the library is used from a clinical perspective.). This is the underlying object with id, value and extensions. The accessor "getUsage" gives direct access to the value
     */
    public StringType getUsageElement() { 
      if (this.usage == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.usage");
        else if (Configuration.doAutoCreate())
          this.usage = new StringType(); // bb
      return this.usage;
    }

    public boolean hasUsageElement() { 
      return this.usage != null && !this.usage.isEmpty();
    }

    public boolean hasUsage() { 
      return this.usage != null && !this.usage.isEmpty();
    }

    /**
     * @param value {@link #usage} (A detailed description of how the library is used from a clinical perspective.). This is the underlying object with id, value and extensions. The accessor "getUsage" gives direct access to the value
     */
    public Library setUsageElement(StringType value) { 
      this.usage = value;
      return this;
    }

    /**
     * @return A detailed description of how the library is used from a clinical perspective.
     */
    public String getUsage() { 
      return this.usage == null ? null : this.usage.getValue();
    }

    /**
     * @param value A detailed description of how the library is used from a clinical perspective.
     */
    public Library setUsage(String value) { 
      if (Utilities.noString(value))
        this.usage = null;
      else {
        if (this.usage == null)
          this.usage = new StringType();
        this.usage.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #approvalDate} (The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.). This is the underlying object with id, value and extensions. The accessor "getApprovalDate" gives direct access to the value
     */
    public DateType getApprovalDateElement() { 
      if (this.approvalDate == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.approvalDate");
        else if (Configuration.doAutoCreate())
          this.approvalDate = new DateType(); // bb
      return this.approvalDate;
    }

    public boolean hasApprovalDateElement() { 
      return this.approvalDate != null && !this.approvalDate.isEmpty();
    }

    public boolean hasApprovalDate() { 
      return this.approvalDate != null && !this.approvalDate.isEmpty();
    }

    /**
     * @param value {@link #approvalDate} (The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.). This is the underlying object with id, value and extensions. The accessor "getApprovalDate" gives direct access to the value
     */
    public Library setApprovalDateElement(DateType value) { 
      this.approvalDate = value;
      return this;
    }

    /**
     * @return The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.
     */
    public Date getApprovalDate() { 
      return this.approvalDate == null ? null : this.approvalDate.getValue();
    }

    /**
     * @param value The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.
     */
    public Library setApprovalDate(Date value) { 
      if (value == null)
        this.approvalDate = null;
      else {
        if (this.approvalDate == null)
          this.approvalDate = new DateType();
        this.approvalDate.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #lastReviewDate} (The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.). This is the underlying object with id, value and extensions. The accessor "getLastReviewDate" gives direct access to the value
     */
    public DateType getLastReviewDateElement() { 
      if (this.lastReviewDate == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.lastReviewDate");
        else if (Configuration.doAutoCreate())
          this.lastReviewDate = new DateType(); // bb
      return this.lastReviewDate;
    }

    public boolean hasLastReviewDateElement() { 
      return this.lastReviewDate != null && !this.lastReviewDate.isEmpty();
    }

    public boolean hasLastReviewDate() { 
      return this.lastReviewDate != null && !this.lastReviewDate.isEmpty();
    }

    /**
     * @param value {@link #lastReviewDate} (The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.). This is the underlying object with id, value and extensions. The accessor "getLastReviewDate" gives direct access to the value
     */
    public Library setLastReviewDateElement(DateType value) { 
      this.lastReviewDate = value;
      return this;
    }

    /**
     * @return The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.
     */
    public Date getLastReviewDate() { 
      return this.lastReviewDate == null ? null : this.lastReviewDate.getValue();
    }

    /**
     * @param value The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.
     */
    public Library setLastReviewDate(Date value) { 
      if (value == null)
        this.lastReviewDate = null;
      else {
        if (this.lastReviewDate == null)
          this.lastReviewDate = new DateType();
        this.lastReviewDate.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #effectivePeriod} (The period during which the library content was or is planned to be in active use.)
     */
    public Period getEffectivePeriod() { 
      if (this.effectivePeriod == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.effectivePeriod");
        else if (Configuration.doAutoCreate())
          this.effectivePeriod = new Period(); // cc
      return this.effectivePeriod;
    }

    public boolean hasEffectivePeriod() { 
      return this.effectivePeriod != null && !this.effectivePeriod.isEmpty();
    }

    /**
     * @param value {@link #effectivePeriod} (The period during which the library content was or is planned to be in active use.)
     */
    public Library setEffectivePeriod(Period value)  { 
      this.effectivePeriod = value;
      return this;
    }

    /**
     * @return {@link #useContext} (The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate library instances.)
     */
    public List<UsageContext> getUseContext() { 
      if (this.useContext == null)
        this.useContext = new ArrayList<UsageContext>();
      return this.useContext;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setUseContext(List<UsageContext> theUseContext) { 
      this.useContext = theUseContext;
      return this;
    }

    public boolean hasUseContext() { 
      if (this.useContext == null)
        return false;
      for (UsageContext item : this.useContext)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public UsageContext addUseContext() { //3
      UsageContext t = new UsageContext();
      if (this.useContext == null)
        this.useContext = new ArrayList<UsageContext>();
      this.useContext.add(t);
      return t;
    }

    public Library addUseContext(UsageContext t) { //3
      if (t == null)
        return this;
      if (this.useContext == null)
        this.useContext = new ArrayList<UsageContext>();
      this.useContext.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #useContext}, creating it if it does not already exist
     */
    public UsageContext getUseContextFirstRep() { 
      if (getUseContext().isEmpty()) {
        addUseContext();
      }
      return getUseContext().get(0);
    }

    /**
     * @return {@link #jurisdiction} (A legal or geographic region in which the library is intended to be used.)
     */
    public List<CodeableConcept> getJurisdiction() { 
      if (this.jurisdiction == null)
        this.jurisdiction = new ArrayList<CodeableConcept>();
      return this.jurisdiction;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setJurisdiction(List<CodeableConcept> theJurisdiction) { 
      this.jurisdiction = theJurisdiction;
      return this;
    }

    public boolean hasJurisdiction() { 
      if (this.jurisdiction == null)
        return false;
      for (CodeableConcept item : this.jurisdiction)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public CodeableConcept addJurisdiction() { //3
      CodeableConcept t = new CodeableConcept();
      if (this.jurisdiction == null)
        this.jurisdiction = new ArrayList<CodeableConcept>();
      this.jurisdiction.add(t);
      return t;
    }

    public Library addJurisdiction(CodeableConcept t) { //3
      if (t == null)
        return this;
      if (this.jurisdiction == null)
        this.jurisdiction = new ArrayList<CodeableConcept>();
      this.jurisdiction.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #jurisdiction}, creating it if it does not already exist
     */
    public CodeableConcept getJurisdictionFirstRep() { 
      if (getJurisdiction().isEmpty()) {
        addJurisdiction();
      }
      return getJurisdiction().get(0);
    }

    /**
     * @return {@link #topic} (Descriptive topics related to the content of the library. Topics provide a high-level categorization of the library that can be useful for filtering and searching.)
     */
    public List<CodeableConcept> getTopic() { 
      if (this.topic == null)
        this.topic = new ArrayList<CodeableConcept>();
      return this.topic;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setTopic(List<CodeableConcept> theTopic) { 
      this.topic = theTopic;
      return this;
    }

    public boolean hasTopic() { 
      if (this.topic == null)
        return false;
      for (CodeableConcept item : this.topic)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public CodeableConcept addTopic() { //3
      CodeableConcept t = new CodeableConcept();
      if (this.topic == null)
        this.topic = new ArrayList<CodeableConcept>();
      this.topic.add(t);
      return t;
    }

    public Library addTopic(CodeableConcept t) { //3
      if (t == null)
        return this;
      if (this.topic == null)
        this.topic = new ArrayList<CodeableConcept>();
      this.topic.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #topic}, creating it if it does not already exist
     */
    public CodeableConcept getTopicFirstRep() { 
      if (getTopic().isEmpty()) {
        addTopic();
      }
      return getTopic().get(0);
    }

    /**
     * @return {@link #contributor} (A contributor to the content of the library, including authors, editors, reviewers, and endorsers.)
     */
    public List<Contributor> getContributor() { 
      if (this.contributor == null)
        this.contributor = new ArrayList<Contributor>();
      return this.contributor;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setContributor(List<Contributor> theContributor) { 
      this.contributor = theContributor;
      return this;
    }

    public boolean hasContributor() { 
      if (this.contributor == null)
        return false;
      for (Contributor item : this.contributor)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public Contributor addContributor() { //3
      Contributor t = new Contributor();
      if (this.contributor == null)
        this.contributor = new ArrayList<Contributor>();
      this.contributor.add(t);
      return t;
    }

    public Library addContributor(Contributor t) { //3
      if (t == null)
        return this;
      if (this.contributor == null)
        this.contributor = new ArrayList<Contributor>();
      this.contributor.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #contributor}, creating it if it does not already exist
     */
    public Contributor getContributorFirstRep() { 
      if (getContributor().isEmpty()) {
        addContributor();
      }
      return getContributor().get(0);
    }

    /**
     * @return {@link #contact} (Contact details to assist a user in finding and communicating with the publisher.)
     */
    public List<ContactDetail> getContact() { 
      if (this.contact == null)
        this.contact = new ArrayList<ContactDetail>();
      return this.contact;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setContact(List<ContactDetail> theContact) { 
      this.contact = theContact;
      return this;
    }

    public boolean hasContact() { 
      if (this.contact == null)
        return false;
      for (ContactDetail item : this.contact)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public ContactDetail addContact() { //3
      ContactDetail t = new ContactDetail();
      if (this.contact == null)
        this.contact = new ArrayList<ContactDetail>();
      this.contact.add(t);
      return t;
    }

    public Library addContact(ContactDetail t) { //3
      if (t == null)
        return this;
      if (this.contact == null)
        this.contact = new ArrayList<ContactDetail>();
      this.contact.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #contact}, creating it if it does not already exist
     */
    public ContactDetail getContactFirstRep() { 
      if (getContact().isEmpty()) {
        addContact();
      }
      return getContact().get(0);
    }

    /**
     * @return {@link #copyright} (A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.). This is the underlying object with id, value and extensions. The accessor "getCopyright" gives direct access to the value
     */
    public MarkdownType getCopyrightElement() { 
      if (this.copyright == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create Library.copyright");
        else if (Configuration.doAutoCreate())
          this.copyright = new MarkdownType(); // bb
      return this.copyright;
    }

    public boolean hasCopyrightElement() { 
      return this.copyright != null && !this.copyright.isEmpty();
    }

    public boolean hasCopyright() { 
      return this.copyright != null && !this.copyright.isEmpty();
    }

    /**
     * @param value {@link #copyright} (A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.). This is the underlying object with id, value and extensions. The accessor "getCopyright" gives direct access to the value
     */
    public Library setCopyrightElement(MarkdownType value) { 
      this.copyright = value;
      return this;
    }

    /**
     * @return A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.
     */
    public String getCopyright() { 
      return this.copyright == null ? null : this.copyright.getValue();
    }

    /**
     * @param value A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.
     */
    public Library setCopyright(String value) { 
      if (value == null)
        this.copyright = null;
      else {
        if (this.copyright == null)
          this.copyright = new MarkdownType();
        this.copyright.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #relatedArtifact} (Related artifacts such as additional documentation, justification, or bibliographic references.)
     */
    public List<RelatedArtifact> getRelatedArtifact() { 
      if (this.relatedArtifact == null)
        this.relatedArtifact = new ArrayList<RelatedArtifact>();
      return this.relatedArtifact;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setRelatedArtifact(List<RelatedArtifact> theRelatedArtifact) { 
      this.relatedArtifact = theRelatedArtifact;
      return this;
    }

    public boolean hasRelatedArtifact() { 
      if (this.relatedArtifact == null)
        return false;
      for (RelatedArtifact item : this.relatedArtifact)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public RelatedArtifact addRelatedArtifact() { //3
      RelatedArtifact t = new RelatedArtifact();
      if (this.relatedArtifact == null)
        this.relatedArtifact = new ArrayList<RelatedArtifact>();
      this.relatedArtifact.add(t);
      return t;
    }

    public Library addRelatedArtifact(RelatedArtifact t) { //3
      if (t == null)
        return this;
      if (this.relatedArtifact == null)
        this.relatedArtifact = new ArrayList<RelatedArtifact>();
      this.relatedArtifact.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #relatedArtifact}, creating it if it does not already exist
     */
    public RelatedArtifact getRelatedArtifactFirstRep() { 
      if (getRelatedArtifact().isEmpty()) {
        addRelatedArtifact();
      }
      return getRelatedArtifact().get(0);
    }

    /**
     * @return {@link #parameter} (The parameter element defines parameters used by the library.)
     */
    public List<ParameterDefinition> getParameter() { 
      if (this.parameter == null)
        this.parameter = new ArrayList<ParameterDefinition>();
      return this.parameter;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setParameter(List<ParameterDefinition> theParameter) { 
      this.parameter = theParameter;
      return this;
    }

    public boolean hasParameter() { 
      if (this.parameter == null)
        return false;
      for (ParameterDefinition item : this.parameter)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public ParameterDefinition addParameter() { //3
      ParameterDefinition t = new ParameterDefinition();
      if (this.parameter == null)
        this.parameter = new ArrayList<ParameterDefinition>();
      this.parameter.add(t);
      return t;
    }

    public Library addParameter(ParameterDefinition t) { //3
      if (t == null)
        return this;
      if (this.parameter == null)
        this.parameter = new ArrayList<ParameterDefinition>();
      this.parameter.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #parameter}, creating it if it does not already exist
     */
    public ParameterDefinition getParameterFirstRep() { 
      if (getParameter().isEmpty()) {
        addParameter();
      }
      return getParameter().get(0);
    }

    /**
     * @return {@link #dataRequirement} (Describes a set of data that must be provided in order to be able to successfully perform the computations defined by the library.)
     */
    public List<DataRequirement> getDataRequirement() { 
      if (this.dataRequirement == null)
        this.dataRequirement = new ArrayList<DataRequirement>();
      return this.dataRequirement;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setDataRequirement(List<DataRequirement> theDataRequirement) { 
      this.dataRequirement = theDataRequirement;
      return this;
    }

    public boolean hasDataRequirement() { 
      if (this.dataRequirement == null)
        return false;
      for (DataRequirement item : this.dataRequirement)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public DataRequirement addDataRequirement() { //3
      DataRequirement t = new DataRequirement();
      if (this.dataRequirement == null)
        this.dataRequirement = new ArrayList<DataRequirement>();
      this.dataRequirement.add(t);
      return t;
    }

    public Library addDataRequirement(DataRequirement t) { //3
      if (t == null)
        return this;
      if (this.dataRequirement == null)
        this.dataRequirement = new ArrayList<DataRequirement>();
      this.dataRequirement.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #dataRequirement}, creating it if it does not already exist
     */
    public DataRequirement getDataRequirementFirstRep() { 
      if (getDataRequirement().isEmpty()) {
        addDataRequirement();
      }
      return getDataRequirement().get(0);
    }

    /**
     * @return {@link #content} (The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.)
     */
    public List<Attachment> getContent() { 
      if (this.content == null)
        this.content = new ArrayList<Attachment>();
      return this.content;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public Library setContent(List<Attachment> theContent) { 
      this.content = theContent;
      return this;
    }

    public boolean hasContent() { 
      if (this.content == null)
        return false;
      for (Attachment item : this.content)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public Attachment addContent() { //3
      Attachment t = new Attachment();
      if (this.content == null)
        this.content = new ArrayList<Attachment>();
      this.content.add(t);
      return t;
    }

    public Library addContent(Attachment t) { //3
      if (t == null)
        return this;
      if (this.content == null)
        this.content = new ArrayList<Attachment>();
      this.content.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #content}, creating it if it does not already exist
     */
    public Attachment getContentFirstRep() { 
      if (getContent().isEmpty()) {
        addContent();
      }
      return getContent().get(0);
    }

      protected void listChildren(List<Property> children) {
        super.listChildren(children);
        children.add(new Property("url", "uri", "An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this library is (or will be) published. The URL SHOULD include the major version of the library. For more information see [Technical and Business Versions](resource.html#versions).", 0, 1, url));
        children.add(new Property("identifier", "Identifier", "A formal identifier that is used to identify this library when it is represented in other formats, or referenced in a specification, model, design or an instance. e.g. CMS or NQF identifiers for a measure artifact. Note that at least one identifier is required for non-experimental active artifacts.", 0, java.lang.Integer.MAX_VALUE, identifier));
        children.add(new Property("version", "string", "The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.", 0, 1, version));
        children.add(new Property("name", "string", "A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.", 0, 1, name));
        children.add(new Property("title", "string", "A short, descriptive, user-friendly title for the library.", 0, 1, title));
        children.add(new Property("status", "code", "The status of this library. Enables tracking the life-cycle of the content.", 0, 1, status));
        children.add(new Property("experimental", "boolean", "A boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.", 0, 1, experimental));
        children.add(new Property("type", "CodeableConcept", "Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.", 0, 1, type));
        children.add(new Property("date", "dateTime", "The date  (and optionally time) when the library was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.", 0, 1, date));
        children.add(new Property("publisher", "string", "The name of the individual or organization that published the library.", 0, 1, publisher));
        children.add(new Property("description", "markdown", "A free text natural language description of the library from a consumer's perspective.", 0, 1, description));
        children.add(new Property("purpose", "markdown", "Explaination of why this library is needed and why it has been designed as it has.", 0, 1, purpose));
        children.add(new Property("usage", "string", "A detailed description of how the library is used from a clinical perspective.", 0, 1, usage));
        children.add(new Property("approvalDate", "date", "The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.", 0, 1, approvalDate));
        children.add(new Property("lastReviewDate", "date", "The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.", 0, 1, lastReviewDate));
        children.add(new Property("effectivePeriod", "Period", "The period during which the library content was or is planned to be in active use.", 0, 1, effectivePeriod));
        children.add(new Property("useContext", "UsageContext", "The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate library instances.", 0, java.lang.Integer.MAX_VALUE, useContext));
        children.add(new Property("jurisdiction", "CodeableConcept", "A legal or geographic region in which the library is intended to be used.", 0, java.lang.Integer.MAX_VALUE, jurisdiction));
        children.add(new Property("topic", "CodeableConcept", "Descriptive topics related to the content of the library. Topics provide a high-level categorization of the library that can be useful for filtering and searching.", 0, java.lang.Integer.MAX_VALUE, topic));
        children.add(new Property("contributor", "Contributor", "A contributor to the content of the library, including authors, editors, reviewers, and endorsers.", 0, java.lang.Integer.MAX_VALUE, contributor));
        children.add(new Property("contact", "ContactDetail", "Contact details to assist a user in finding and communicating with the publisher.", 0, java.lang.Integer.MAX_VALUE, contact));
        children.add(new Property("copyright", "markdown", "A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.", 0, 1, copyright));
        children.add(new Property("relatedArtifact", "RelatedArtifact", "Related artifacts such as additional documentation, justification, or bibliographic references.", 0, java.lang.Integer.MAX_VALUE, relatedArtifact));
        children.add(new Property("parameter", "ParameterDefinition", "The parameter element defines parameters used by the library.", 0, java.lang.Integer.MAX_VALUE, parameter));
        children.add(new Property("dataRequirement", "DataRequirement", "Describes a set of data that must be provided in order to be able to successfully perform the computations defined by the library.", 0, java.lang.Integer.MAX_VALUE, dataRequirement));
        children.add(new Property("content", "Attachment", "The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.", 0, java.lang.Integer.MAX_VALUE, content));
      }

      @Override
      public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
        switch (_hash) {
        case 116079: /*url*/  return new Property("url", "uri", "An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this library is (or will be) published. The URL SHOULD include the major version of the library. For more information see [Technical and Business Versions](resource.html#versions).", 0, 1, url);
        case -1618432855: /*identifier*/  return new Property("identifier", "Identifier", "A formal identifier that is used to identify this library when it is represented in other formats, or referenced in a specification, model, design or an instance. e.g. CMS or NQF identifiers for a measure artifact. Note that at least one identifier is required for non-experimental active artifacts.", 0, java.lang.Integer.MAX_VALUE, identifier);
        case 351608024: /*version*/  return new Property("version", "string", "The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.", 0, 1, version);
        case 3373707: /*name*/  return new Property("name", "string", "A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.", 0, 1, name);
        case 110371416: /*title*/  return new Property("title", "string", "A short, descriptive, user-friendly title for the library.", 0, 1, title);
        case -892481550: /*status*/  return new Property("status", "code", "The status of this library. Enables tracking the life-cycle of the content.", 0, 1, status);
        case -404562712: /*experimental*/  return new Property("experimental", "boolean", "A boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.", 0, 1, experimental);
        case 3575610: /*type*/  return new Property("type", "CodeableConcept", "Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.", 0, 1, type);
        case 3076014: /*date*/  return new Property("date", "dateTime", "The date  (and optionally time) when the library was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.", 0, 1, date);
        case 1447404028: /*publisher*/  return new Property("publisher", "string", "The name of the individual or organization that published the library.", 0, 1, publisher);
        case -1724546052: /*description*/  return new Property("description", "markdown", "A free text natural language description of the library from a consumer's perspective.", 0, 1, description);
        case -220463842: /*purpose*/  return new Property("purpose", "markdown", "Explaination of why this library is needed and why it has been designed as it has.", 0, 1, purpose);
        case 111574433: /*usage*/  return new Property("usage", "string", "A detailed description of how the library is used from a clinical perspective.", 0, 1, usage);
        case 223539345: /*approvalDate*/  return new Property("approvalDate", "date", "The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.", 0, 1, approvalDate);
        case -1687512484: /*lastReviewDate*/  return new Property("lastReviewDate", "date", "The date on which the resource content was last reviewed. Review happens periodically after approval, but doesn't change the original approval date.", 0, 1, lastReviewDate);
        case -403934648: /*effectivePeriod*/  return new Property("effectivePeriod", "Period", "The period during which the library content was or is planned to be in active use.", 0, 1, effectivePeriod);
        case -669707736: /*useContext*/  return new Property("useContext", "UsageContext", "The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate library instances.", 0, java.lang.Integer.MAX_VALUE, useContext);
        case -507075711: /*jurisdiction*/  return new Property("jurisdiction", "CodeableConcept", "A legal or geographic region in which the library is intended to be used.", 0, java.lang.Integer.MAX_VALUE, jurisdiction);
        case 110546223: /*topic*/  return new Property("topic", "CodeableConcept", "Descriptive topics related to the content of the library. Topics provide a high-level categorization of the library that can be useful for filtering and searching.", 0, java.lang.Integer.MAX_VALUE, topic);
        case -1895276325: /*contributor*/  return new Property("contributor", "Contributor", "A contributor to the content of the library, including authors, editors, reviewers, and endorsers.", 0, java.lang.Integer.MAX_VALUE, contributor);
        case 951526432: /*contact*/  return new Property("contact", "ContactDetail", "Contact details to assist a user in finding and communicating with the publisher.", 0, java.lang.Integer.MAX_VALUE, contact);
        case 1522889671: /*copyright*/  return new Property("copyright", "markdown", "A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.", 0, 1, copyright);
        case 666807069: /*relatedArtifact*/  return new Property("relatedArtifact", "RelatedArtifact", "Related artifacts such as additional documentation, justification, or bibliographic references.", 0, java.lang.Integer.MAX_VALUE, relatedArtifact);
        case 1954460585: /*parameter*/  return new Property("parameter", "ParameterDefinition", "The parameter element defines parameters used by the library.", 0, java.lang.Integer.MAX_VALUE, parameter);
        case 629147193: /*dataRequirement*/  return new Property("dataRequirement", "DataRequirement", "Describes a set of data that must be provided in order to be able to successfully perform the computations defined by the library.", 0, java.lang.Integer.MAX_VALUE, dataRequirement);
        case 951530617: /*content*/  return new Property("content", "Attachment", "The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.", 0, java.lang.Integer.MAX_VALUE, content);
        default: return super.getNamedProperty(_hash, _name, _checkValid);
        }

      }

      @Override
      public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
        switch (hash) {
        case 116079: /*url*/ return this.url == null ? new Base[0] : new Base[] {this.url}; // UriType
        case -1618432855: /*identifier*/ return this.identifier == null ? new Base[0] : this.identifier.toArray(new Base[this.identifier.size()]); // Identifier
        case 351608024: /*version*/ return this.version == null ? new Base[0] : new Base[] {this.version}; // StringType
        case 3373707: /*name*/ return this.name == null ? new Base[0] : new Base[] {this.name}; // StringType
        case 110371416: /*title*/ return this.title == null ? new Base[0] : new Base[] {this.title}; // StringType
        case -892481550: /*status*/ return this.status == null ? new Base[0] : new Base[] {this.status}; // Enumeration<PublicationStatus>
        case -404562712: /*experimental*/ return this.experimental == null ? new Base[0] : new Base[] {this.experimental}; // BooleanType
        case 3575610: /*type*/ return this.type == null ? new Base[0] : new Base[] {this.type}; // CodeableConcept
        case 3076014: /*date*/ return this.date == null ? new Base[0] : new Base[] {this.date}; // DateTimeType
        case 1447404028: /*publisher*/ return this.publisher == null ? new Base[0] : new Base[] {this.publisher}; // StringType
        case -1724546052: /*description*/ return this.description == null ? new Base[0] : new Base[] {this.description}; // MarkdownType
        case -220463842: /*purpose*/ return this.purpose == null ? new Base[0] : new Base[] {this.purpose}; // MarkdownType
        case 111574433: /*usage*/ return this.usage == null ? new Base[0] : new Base[] {this.usage}; // StringType
        case 223539345: /*approvalDate*/ return this.approvalDate == null ? new Base[0] : new Base[] {this.approvalDate}; // DateType
        case -1687512484: /*lastReviewDate*/ return this.lastReviewDate == null ? new Base[0] : new Base[] {this.lastReviewDate}; // DateType
        case -403934648: /*effectivePeriod*/ return this.effectivePeriod == null ? new Base[0] : new Base[] {this.effectivePeriod}; // Period
        case -669707736: /*useContext*/ return this.useContext == null ? new Base[0] : this.useContext.toArray(new Base[this.useContext.size()]); // UsageContext
        case -507075711: /*jurisdiction*/ return this.jurisdiction == null ? new Base[0] : this.jurisdiction.toArray(new Base[this.jurisdiction.size()]); // CodeableConcept
        case 110546223: /*topic*/ return this.topic == null ? new Base[0] : this.topic.toArray(new Base[this.topic.size()]); // CodeableConcept
        case -1895276325: /*contributor*/ return this.contributor == null ? new Base[0] : this.contributor.toArray(new Base[this.contributor.size()]); // Contributor
        case 951526432: /*contact*/ return this.contact == null ? new Base[0] : this.contact.toArray(new Base[this.contact.size()]); // ContactDetail
        case 1522889671: /*copyright*/ return this.copyright == null ? new Base[0] : new Base[] {this.copyright}; // MarkdownType
        case 666807069: /*relatedArtifact*/ return this.relatedArtifact == null ? new Base[0] : this.relatedArtifact.toArray(new Base[this.relatedArtifact.size()]); // RelatedArtifact
        case 1954460585: /*parameter*/ return this.parameter == null ? new Base[0] : this.parameter.toArray(new Base[this.parameter.size()]); // ParameterDefinition
        case 629147193: /*dataRequirement*/ return this.dataRequirement == null ? new Base[0] : this.dataRequirement.toArray(new Base[this.dataRequirement.size()]); // DataRequirement
        case 951530617: /*content*/ return this.content == null ? new Base[0] : this.content.toArray(new Base[this.content.size()]); // Attachment
        default: return super.getProperty(hash, name, checkValid);
        }

      }

      @Override
      public Base setProperty(int hash, String name, Base value) throws FHIRException {
        switch (hash) {
        case 116079: // url
          this.url = castToUri(value); // UriType
          return value;
        case -1618432855: // identifier
          this.getIdentifier().add(castToIdentifier(value)); // Identifier
          return value;
        case 351608024: // version
          this.version = castToString(value); // StringType
          return value;
        case 3373707: // name
          this.name = castToString(value); // StringType
          return value;
        case 110371416: // title
          this.title = castToString(value); // StringType
          return value;
        case -892481550: // status
          value = new PublicationStatusEnumFactory().fromType(castToCode(value));
          this.status = (Enumeration) value; // Enumeration<PublicationStatus>
          return value;
        case -404562712: // experimental
          this.experimental = castToBoolean(value); // BooleanType
          return value;
        case 3575610: // type
          this.type = castToCodeableConcept(value); // CodeableConcept
          return value;
        case 3076014: // date
          this.date = castToDateTime(value); // DateTimeType
          return value;
        case 1447404028: // publisher
          this.publisher = castToString(value); // StringType
          return value;
        case -1724546052: // description
          this.description = castToMarkdown(value); // MarkdownType
          return value;
        case -220463842: // purpose
          this.purpose = castToMarkdown(value); // MarkdownType
          return value;
        case 111574433: // usage
          this.usage = castToString(value); // StringType
          return value;
        case 223539345: // approvalDate
          this.approvalDate = castToDate(value); // DateType
          return value;
        case -1687512484: // lastReviewDate
          this.lastReviewDate = castToDate(value); // DateType
          return value;
        case -403934648: // effectivePeriod
          this.effectivePeriod = castToPeriod(value); // Period
          return value;
        case -669707736: // useContext
          this.getUseContext().add(castToUsageContext(value)); // UsageContext
          return value;
        case -507075711: // jurisdiction
          this.getJurisdiction().add(castToCodeableConcept(value)); // CodeableConcept
          return value;
        case 110546223: // topic
          this.getTopic().add(castToCodeableConcept(value)); // CodeableConcept
          return value;
        case -1895276325: // contributor
          this.getContributor().add(castToContributor(value)); // Contributor
          return value;
        case 951526432: // contact
          this.getContact().add(castToContactDetail(value)); // ContactDetail
          return value;
        case 1522889671: // copyright
          this.copyright = castToMarkdown(value); // MarkdownType
          return value;
        case 666807069: // relatedArtifact
          this.getRelatedArtifact().add(castToRelatedArtifact(value)); // RelatedArtifact
          return value;
        case 1954460585: // parameter
          this.getParameter().add(castToParameterDefinition(value)); // ParameterDefinition
          return value;
        case 629147193: // dataRequirement
          this.getDataRequirement().add(castToDataRequirement(value)); // DataRequirement
          return value;
        case 951530617: // content
          this.getContent().add(castToAttachment(value)); // Attachment
          return value;
        default: return super.setProperty(hash, name, value);
        }

      }

      @Override
      public Base setProperty(String name, Base value) throws FHIRException {
        if (name.equals("url")) {
          this.url = castToUri(value); // UriType
        } else if (name.equals("identifier")) {
          this.getIdentifier().add(castToIdentifier(value));
        } else if (name.equals("version")) {
          this.version = castToString(value); // StringType
        } else if (name.equals("name")) {
          this.name = castToString(value); // StringType
        } else if (name.equals("title")) {
          this.title = castToString(value); // StringType
        } else if (name.equals("status")) {
          value = new PublicationStatusEnumFactory().fromType(castToCode(value));
          this.status = (Enumeration) value; // Enumeration<PublicationStatus>
        } else if (name.equals("experimental")) {
          this.experimental = castToBoolean(value); // BooleanType
        } else if (name.equals("type")) {
          this.type = castToCodeableConcept(value); // CodeableConcept
        } else if (name.equals("date")) {
          this.date = castToDateTime(value); // DateTimeType
        } else if (name.equals("publisher")) {
          this.publisher = castToString(value); // StringType
        } else if (name.equals("description")) {
          this.description = castToMarkdown(value); // MarkdownType
        } else if (name.equals("purpose")) {
          this.purpose = castToMarkdown(value); // MarkdownType
        } else if (name.equals("usage")) {
          this.usage = castToString(value); // StringType
        } else if (name.equals("approvalDate")) {
          this.approvalDate = castToDate(value); // DateType
        } else if (name.equals("lastReviewDate")) {
          this.lastReviewDate = castToDate(value); // DateType
        } else if (name.equals("effectivePeriod")) {
          this.effectivePeriod = castToPeriod(value); // Period
        } else if (name.equals("useContext")) {
          this.getUseContext().add(castToUsageContext(value));
        } else if (name.equals("jurisdiction")) {
          this.getJurisdiction().add(castToCodeableConcept(value));
        } else if (name.equals("topic")) {
          this.getTopic().add(castToCodeableConcept(value));
        } else if (name.equals("contributor")) {
          this.getContributor().add(castToContributor(value));
        } else if (name.equals("contact")) {
          this.getContact().add(castToContactDetail(value));
        } else if (name.equals("copyright")) {
          this.copyright = castToMarkdown(value); // MarkdownType
        } else if (name.equals("relatedArtifact")) {
          this.getRelatedArtifact().add(castToRelatedArtifact(value));
        } else if (name.equals("parameter")) {
          this.getParameter().add(castToParameterDefinition(value));
        } else if (name.equals("dataRequirement")) {
          this.getDataRequirement().add(castToDataRequirement(value));
        } else if (name.equals("content")) {
          this.getContent().add(castToAttachment(value));
        } else
          return super.setProperty(name, value);
        return value;
      }

      @Override
      public Base makeProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case 116079:  return getUrlElement();
        case -1618432855:  return addIdentifier(); 
        case 351608024:  return getVersionElement();
        case 3373707:  return getNameElement();
        case 110371416:  return getTitleElement();
        case -892481550:  return getStatusElement();
        case -404562712:  return getExperimentalElement();
        case 3575610:  return getType(); 
        case 3076014:  return getDateElement();
        case 1447404028:  return getPublisherElement();
        case -1724546052:  return getDescriptionElement();
        case -220463842:  return getPurposeElement();
        case 111574433:  return getUsageElement();
        case 223539345:  return getApprovalDateElement();
        case -1687512484:  return getLastReviewDateElement();
        case -403934648:  return getEffectivePeriod(); 
        case -669707736:  return addUseContext(); 
        case -507075711:  return addJurisdiction(); 
        case 110546223:  return addTopic(); 
        case -1895276325:  return addContributor(); 
        case 951526432:  return addContact(); 
        case 1522889671:  return getCopyrightElement();
        case 666807069:  return addRelatedArtifact(); 
        case 1954460585:  return addParameter(); 
        case 629147193:  return addDataRequirement(); 
        case 951530617:  return addContent(); 
        default: return super.makeProperty(hash, name);
        }

      }

      @Override
      public String[] getTypesForProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case 116079: /*url*/ return new String[] {"uri"};
        case -1618432855: /*identifier*/ return new String[] {"Identifier"};
        case 351608024: /*version*/ return new String[] {"string"};
        case 3373707: /*name*/ return new String[] {"string"};
        case 110371416: /*title*/ return new String[] {"string"};
        case -892481550: /*status*/ return new String[] {"code"};
        case -404562712: /*experimental*/ return new String[] {"boolean"};
        case 3575610: /*type*/ return new String[] {"CodeableConcept"};
        case 3076014: /*date*/ return new String[] {"dateTime"};
        case 1447404028: /*publisher*/ return new String[] {"string"};
        case -1724546052: /*description*/ return new String[] {"markdown"};
        case -220463842: /*purpose*/ return new String[] {"markdown"};
        case 111574433: /*usage*/ return new String[] {"string"};
        case 223539345: /*approvalDate*/ return new String[] {"date"};
        case -1687512484: /*lastReviewDate*/ return new String[] {"date"};
        case -403934648: /*effectivePeriod*/ return new String[] {"Period"};
        case -669707736: /*useContext*/ return new String[] {"UsageContext"};
        case -507075711: /*jurisdiction*/ return new String[] {"CodeableConcept"};
        case 110546223: /*topic*/ return new String[] {"CodeableConcept"};
        case -1895276325: /*contributor*/ return new String[] {"Contributor"};
        case 951526432: /*contact*/ return new String[] {"ContactDetail"};
        case 1522889671: /*copyright*/ return new String[] {"markdown"};
        case 666807069: /*relatedArtifact*/ return new String[] {"RelatedArtifact"};
        case 1954460585: /*parameter*/ return new String[] {"ParameterDefinition"};
        case 629147193: /*dataRequirement*/ return new String[] {"DataRequirement"};
        case 951530617: /*content*/ return new String[] {"Attachment"};
        default: return super.getTypesForProperty(hash, name);
        }

      }

      @Override
      public Base addChild(String name) throws FHIRException {
        if (name.equals("url")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.url");
        }
        else if (name.equals("identifier")) {
          return addIdentifier();
        }
        else if (name.equals("version")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.version");
        }
        else if (name.equals("name")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.name");
        }
        else if (name.equals("title")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.title");
        }
        else if (name.equals("status")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.status");
        }
        else if (name.equals("experimental")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.experimental");
        }
        else if (name.equals("type")) {
          this.type = new CodeableConcept();
          return this.type;
        }
        else if (name.equals("date")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.date");
        }
        else if (name.equals("publisher")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.publisher");
        }
        else if (name.equals("description")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.description");
        }
        else if (name.equals("purpose")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.purpose");
        }
        else if (name.equals("usage")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.usage");
        }
        else if (name.equals("approvalDate")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.approvalDate");
        }
        else if (name.equals("lastReviewDate")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.lastReviewDate");
        }
        else if (name.equals("effectivePeriod")) {
          this.effectivePeriod = new Period();
          return this.effectivePeriod;
        }
        else if (name.equals("useContext")) {
          return addUseContext();
        }
        else if (name.equals("jurisdiction")) {
          return addJurisdiction();
        }
        else if (name.equals("topic")) {
          return addTopic();
        }
        else if (name.equals("contributor")) {
          return addContributor();
        }
        else if (name.equals("contact")) {
          return addContact();
        }
        else if (name.equals("copyright")) {
          throw new FHIRException("Cannot call addChild on a singleton property Library.copyright");
        }
        else if (name.equals("relatedArtifact")) {
          return addRelatedArtifact();
        }
        else if (name.equals("parameter")) {
          return addParameter();
        }
        else if (name.equals("dataRequirement")) {
          return addDataRequirement();
        }
        else if (name.equals("content")) {
          return addContent();
        }
        else
          return super.addChild(name);
      }

  public String fhirType() {
    return "Library";

  }

      public Library copy() {
        Library dst = new Library();
        copyValues(dst);
        dst.url = url == null ? null : url.copy();
        if (identifier != null) {
          dst.identifier = new ArrayList<Identifier>();
          for (Identifier i : identifier)
            dst.identifier.add(i.copy());
        };
        dst.version = version == null ? null : version.copy();
        dst.name = name == null ? null : name.copy();
        dst.title = title == null ? null : title.copy();
        dst.status = status == null ? null : status.copy();
        dst.experimental = experimental == null ? null : experimental.copy();
        dst.type = type == null ? null : type.copy();
        dst.date = date == null ? null : date.copy();
        dst.publisher = publisher == null ? null : publisher.copy();
        dst.description = description == null ? null : description.copy();
        dst.purpose = purpose == null ? null : purpose.copy();
        dst.usage = usage == null ? null : usage.copy();
        dst.approvalDate = approvalDate == null ? null : approvalDate.copy();
        dst.lastReviewDate = lastReviewDate == null ? null : lastReviewDate.copy();
        dst.effectivePeriod = effectivePeriod == null ? null : effectivePeriod.copy();
        if (useContext != null) {
          dst.useContext = new ArrayList<UsageContext>();
          for (UsageContext i : useContext)
            dst.useContext.add(i.copy());
        };
        if (jurisdiction != null) {
          dst.jurisdiction = new ArrayList<CodeableConcept>();
          for (CodeableConcept i : jurisdiction)
            dst.jurisdiction.add(i.copy());
        };
        if (topic != null) {
          dst.topic = new ArrayList<CodeableConcept>();
          for (CodeableConcept i : topic)
            dst.topic.add(i.copy());
        };
        if (contributor != null) {
          dst.contributor = new ArrayList<Contributor>();
          for (Contributor i : contributor)
            dst.contributor.add(i.copy());
        };
        if (contact != null) {
          dst.contact = new ArrayList<ContactDetail>();
          for (ContactDetail i : contact)
            dst.contact.add(i.copy());
        };
        dst.copyright = copyright == null ? null : copyright.copy();
        if (relatedArtifact != null) {
          dst.relatedArtifact = new ArrayList<RelatedArtifact>();
          for (RelatedArtifact i : relatedArtifact)
            dst.relatedArtifact.add(i.copy());
        };
        if (parameter != null) {
          dst.parameter = new ArrayList<ParameterDefinition>();
          for (ParameterDefinition i : parameter)
            dst.parameter.add(i.copy());
        };
        if (dataRequirement != null) {
          dst.dataRequirement = new ArrayList<DataRequirement>();
          for (DataRequirement i : dataRequirement)
            dst.dataRequirement.add(i.copy());
        };
        if (content != null) {
          dst.content = new ArrayList<Attachment>();
          for (Attachment i : content)
            dst.content.add(i.copy());
        };
        return dst;
      }

      protected Library typedCopy() {
        return copy();
      }

      @Override
      public boolean equalsDeep(Base other_) {
        if (!super.equalsDeep(other_))
          return false;
        if (!(other_ instanceof Library))
          return false;
        Library o = (Library) other_;
        return compareDeep(identifier, o.identifier, true) && compareDeep(type, o.type, true) && compareDeep(purpose, o.purpose, true)
           && compareDeep(usage, o.usage, true) && compareDeep(approvalDate, o.approvalDate, true) && compareDeep(lastReviewDate, o.lastReviewDate, true)
           && compareDeep(effectivePeriod, o.effectivePeriod, true) && compareDeep(topic, o.topic, true) && compareDeep(contributor, o.contributor, true)
           && compareDeep(copyright, o.copyright, true) && compareDeep(relatedArtifact, o.relatedArtifact, true)
           && compareDeep(parameter, o.parameter, true) && compareDeep(dataRequirement, o.dataRequirement, true)
           && compareDeep(content, o.content, true);
      }

      @Override
      public boolean equalsShallow(Base other_) {
        if (!super.equalsShallow(other_))
          return false;
        if (!(other_ instanceof Library))
          return false;
        Library o = (Library) other_;
        return compareValues(purpose, o.purpose, true) && compareValues(usage, o.usage, true) && compareValues(approvalDate, o.approvalDate, true)
           && compareValues(lastReviewDate, o.lastReviewDate, true) && compareValues(copyright, o.copyright, true)
          ;
      }

      public boolean isEmpty() {
        return super.isEmpty() && ca.uhn.fhir.util.ElementUtil.isEmpty(identifier, type, purpose
          , usage, approvalDate, lastReviewDate, effectivePeriod, topic, contributor, copyright
          , relatedArtifact, parameter, dataRequirement, content);
      }

  @Override
  public ResourceType getResourceType() {
    return ResourceType.Library;
   }

 /**
   * Search parameter: <b>date</b>
   * <p>
   * Description: <b>The library publication date</b><br>
   * Type: <b>date</b><br>
   * Path: <b>Library.date</b><br>
   * </p>
   */
  @SearchParamDefinition(name="date", path="Library.date", description="The library publication date", type="date" )
  public static final String SP_DATE = "date";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>date</b>
   * <p>
   * Description: <b>The library publication date</b><br>
   * Type: <b>date</b><br>
   * Path: <b>Library.date</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.DateClientParam DATE = new ca.uhn.fhir.rest.gclient.DateClientParam(SP_DATE);

 /**
   * Search parameter: <b>identifier</b>
   * <p>
   * Description: <b>External identifier for the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.identifier</b><br>
   * </p>
   */
  @SearchParamDefinition(name="identifier", path="Library.identifier", description="External identifier for the library", type="token" )
  public static final String SP_IDENTIFIER = "identifier";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>identifier</b>
   * <p>
   * Description: <b>External identifier for the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.identifier</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam IDENTIFIER = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_IDENTIFIER);

 /**
   * Search parameter: <b>successor</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  @SearchParamDefinition(name="successor", path="Library.relatedArtifact.where(type='successor').resource", description="What resource is being referenced", type="reference" )
  public static final String SP_SUCCESSOR = "successor";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>successor</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam SUCCESSOR = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_SUCCESSOR);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>Library:successor</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_SUCCESSOR = new ca.uhn.fhir.model.api.Include("Library:successor").toLocked();

 /**
   * Search parameter: <b>jurisdiction</b>
   * <p>
   * Description: <b>Intended jurisdiction for the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.jurisdiction</b><br>
   * </p>
   */
  @SearchParamDefinition(name="jurisdiction", path="Library.jurisdiction", description="Intended jurisdiction for the library", type="token" )
  public static final String SP_JURISDICTION = "jurisdiction";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>jurisdiction</b>
   * <p>
   * Description: <b>Intended jurisdiction for the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.jurisdiction</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam JURISDICTION = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_JURISDICTION);

 /**
   * Search parameter: <b>description</b>
   * <p>
   * Description: <b>The description of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.description</b><br>
   * </p>
   */
  @SearchParamDefinition(name="description", path="Library.description", description="The description of the library", type="string" )
  public static final String SP_DESCRIPTION = "description";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>description</b>
   * <p>
   * Description: <b>The description of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.description</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam DESCRIPTION = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_DESCRIPTION);

 /**
   * Search parameter: <b>derived-from</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  @SearchParamDefinition(name="derived-from", path="Library.relatedArtifact.where(type='derived-from').resource", description="What resource is being referenced", type="reference" )
  public static final String SP_DERIVED_FROM = "derived-from";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>derived-from</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam DERIVED_FROM = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_DERIVED_FROM);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>Library:derived-from</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_DERIVED_FROM = new ca.uhn.fhir.model.api.Include("Library:derived-from").toLocked();

 /**
   * Search parameter: <b>predecessor</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  @SearchParamDefinition(name="predecessor", path="Library.relatedArtifact.where(type='predecessor').resource", description="What resource is being referenced", type="reference" )
  public static final String SP_PREDECESSOR = "predecessor";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>predecessor</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam PREDECESSOR = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_PREDECESSOR);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>Library:predecessor</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_PREDECESSOR = new ca.uhn.fhir.model.api.Include("Library:predecessor").toLocked();

 /**
   * Search parameter: <b>title</b>
   * <p>
   * Description: <b>The human-friendly name of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.title</b><br>
   * </p>
   */
  @SearchParamDefinition(name="title", path="Library.title", description="The human-friendly name of the library", type="string" )
  public static final String SP_TITLE = "title";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>title</b>
   * <p>
   * Description: <b>The human-friendly name of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.title</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam TITLE = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_TITLE);

 /**
   * Search parameter: <b>composed-of</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  @SearchParamDefinition(name="composed-of", path="Library.relatedArtifact.where(type='composed-of').resource", description="What resource is being referenced", type="reference" )
  public static final String SP_COMPOSED_OF = "composed-of";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>composed-of</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam COMPOSED_OF = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_COMPOSED_OF);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>Library:composed-of</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_COMPOSED_OF = new ca.uhn.fhir.model.api.Include("Library:composed-of").toLocked();

 /**
   * Search parameter: <b>version</b>
   * <p>
   * Description: <b>The business version of the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.version</b><br>
   * </p>
   */
  @SearchParamDefinition(name="version", path="Library.version", description="The business version of the library", type="token" )
  public static final String SP_VERSION = "version";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>version</b>
   * <p>
   * Description: <b>The business version of the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.version</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam VERSION = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_VERSION);

 /**
   * Search parameter: <b>url</b>
   * <p>
   * Description: <b>The uri that identifies the library</b><br>
   * Type: <b>uri</b><br>
   * Path: <b>Library.url</b><br>
   * </p>
   */
  @SearchParamDefinition(name="url", path="Library.url", description="The uri that identifies the library", type="uri" )
  public static final String SP_URL = "url";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>url</b>
   * <p>
   * Description: <b>The uri that identifies the library</b><br>
   * Type: <b>uri</b><br>
   * Path: <b>Library.url</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.UriClientParam URL = new ca.uhn.fhir.rest.gclient.UriClientParam(SP_URL);

 /**
   * Search parameter: <b>effective</b>
   * <p>
   * Description: <b>The time during which the library is intended to be in use</b><br>
   * Type: <b>date</b><br>
   * Path: <b>Library.effectivePeriod</b><br>
   * </p>
   */
  @SearchParamDefinition(name="effective", path="Library.effectivePeriod", description="The time during which the library is intended to be in use", type="date" )
  public static final String SP_EFFECTIVE = "effective";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>effective</b>
   * <p>
   * Description: <b>The time during which the library is intended to be in use</b><br>
   * Type: <b>date</b><br>
   * Path: <b>Library.effectivePeriod</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.DateClientParam EFFECTIVE = new ca.uhn.fhir.rest.gclient.DateClientParam(SP_EFFECTIVE);

 /**
   * Search parameter: <b>depends-on</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  @SearchParamDefinition(name="depends-on", path="Library.relatedArtifact.where(type='depends-on').resource", description="What resource is being referenced", type="reference" )
  public static final String SP_DEPENDS_ON = "depends-on";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>depends-on</b>
   * <p>
   * Description: <b>What resource is being referenced</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>Library.relatedArtifact.resource</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam DEPENDS_ON = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_DEPENDS_ON);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>Library:depends-on</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_DEPENDS_ON = new ca.uhn.fhir.model.api.Include("Library:depends-on").toLocked();

 /**
   * Search parameter: <b>name</b>
   * <p>
   * Description: <b>Computationally friendly name of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.name</b><br>
   * </p>
   */
  @SearchParamDefinition(name="name", path="Library.name", description="Computationally friendly name of the library", type="string" )
  public static final String SP_NAME = "name";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>name</b>
   * <p>
   * Description: <b>Computationally friendly name of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.name</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam NAME = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_NAME);

 /**
   * Search parameter: <b>publisher</b>
   * <p>
   * Description: <b>Name of the publisher of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.publisher</b><br>
   * </p>
   */
  @SearchParamDefinition(name="publisher", path="Library.publisher", description="Name of the publisher of the library", type="string" )
  public static final String SP_PUBLISHER = "publisher";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>publisher</b>
   * <p>
   * Description: <b>Name of the publisher of the library</b><br>
   * Type: <b>string</b><br>
   * Path: <b>Library.publisher</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.StringClientParam PUBLISHER = new ca.uhn.fhir.rest.gclient.StringClientParam(SP_PUBLISHER);

 /**
   * Search parameter: <b>topic</b>
   * <p>
   * Description: <b>Topics associated with the module</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.topic</b><br>
   * </p>
   */
  @SearchParamDefinition(name="topic", path="Library.topic", description="Topics associated with the module", type="token" )
  public static final String SP_TOPIC = "topic";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>topic</b>
   * <p>
   * Description: <b>Topics associated with the module</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.topic</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam TOPIC = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_TOPIC);

 /**
   * Search parameter: <b>status</b>
   * <p>
   * Description: <b>The current status of the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.status</b><br>
   * </p>
   */
  @SearchParamDefinition(name="status", path="Library.status", description="The current status of the library", type="token" )
  public static final String SP_STATUS = "status";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>status</b>
   * <p>
   * Description: <b>The current status of the library</b><br>
   * Type: <b>token</b><br>
   * Path: <b>Library.status</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam STATUS = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_STATUS);


}