/// url = 'http://hl7.org/fhir/StructureMap/DocumentReference3to4'
/// name = 'DocumentReference3to4'
/// title = 'DocumentReference Transforms: R3 to R4'
/// status = 'active'

uses "http://hl7.org/fhir/3.0/DocumentReference" alias DocumentReferenceR3 as source
uses "http://hl7.org/fhir/4.0/DocumentReference" alias DocumentReference as target

imports "http://hl7.org/fhir/StructureMap/*3to4"

group DocumentReference(source src : DocumentReferenceR3, target tgt : DocumentReference) extends DomainResource <<type+>> {
  src.masterIdentifier -> tgt.masterIdentifier;
  src.identifier -> tgt.identifier;
  src.status -> tgt.status;
  src.docStatus -> tgt.docStatus;
  src.type -> tgt.type;
  src.class -> tgt.category;
  src.subject -> tgt.subject;
  src.indexed -> tgt.date;
  src.created as vs ->  tgt.extension as ext,  ext.url = 'http://hl7.org/fhir/3.0/StructureDefinition/extension-DocumentReference.created',  ext.value = vs;
  src.author as s -> tgt.agent as t then agent(s, t);
  src.authenticator -> tgt.authenticator;
  src.custodian -> tgt.custodian;
  src.relatesTo as vs0 -> tgt.relatesTo as vt0 then relatesTo(vs0, vt0);
  src.description -> tgt.description;
  src.securityLabel -> tgt.securityLabel;
  src.content as vs0 -> tgt.content as vt0 then content(vs0, vt0);
  src.context as vs0 -> tgt.context as vt0 then context(vs0, vt0);
}

group agent(source src, target tgt) extends BackboneElement {
  src ->  tgt.type as cc,  cc.coding as c,  c.system = 'http://terminology.hl7.org/CodeSystem/v3-ParticipationType',  c.code = 'AUT' "author";
  src -> tgt.who as vt0 then Reference(src, vt0) "who";
}

group relatesTo(source src, target tgt) extends BackboneElement {
  src.code -> tgt.code;
  src.target -> tgt.target;
}

group content(source src, target tgt) extends BackboneElement {
  src.attachment -> tgt.attachment;
  src.format -> tgt.format;
}

group context(source src, target tgt) extends BackboneElement {
  src.encounter -> tgt.encounter;
  src.event -> tgt.event;
  src.period -> tgt.period;
  src.facilityType -> tgt.facilityType;
  src.practiceSetting -> tgt.practiceSetting;
  src.sourcePatientInfo -> tgt.sourcePatientInfo;
  src.related as vs0 -> tgt.related as vt0 then related(vs0, vt0);
}

group related(source src, target tgt) {
  src.identifier as vs0 then Identifier2Reference(vs0, tgt);
  src.ref as vs0 then Reference(vs0, tgt);
}