http://hl7.org/fhir/StructureDefinition/capabilitystatement-search-parameter-combination|4.0.1

{
  "description": "This extension defines a possible search parameter combination,  by listing a set of search parameters and indicating whether they are required or optional. If a search combination is specified, clients should expect that they must submit a search that meets one of the required combinations or the search will be unsuccessful. If multiple search parameter combinations are specified, a client may pick between them, and supply the minimal required parameters for any of the combinations.",
  "package": "hl7.fhir.r4.core@4.0.1",
  "date": "2014-04-12T00:00:00Z",
  "derivation": "constraint",
  "publisher": "Health Level Seven, Inc. - [WG Name] WG",
  "fhirVersion": "4.0.1",
  "name": "search-parameter-combination",
  "mapping": [ {
    "uri": "http://hl7.org/v2",
    "name": "HL7 v2 Mapping",
    "identity": "v2"
  }, {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "fhirversion": null,
  "title": "Search Parameter Combination",
  "versionAlgorithmCoding": null,
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 1
  } ],
  "status": "draft",
  "id": "daf84498-ded8-59ed-81b7-e1bc5415ede7",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/StructureDefinition/capabilitystatement-search-parameter-combination",
  "identifier": null,
  "context": [ {
    "type": "element",
    "expression": "CapabilityStatement.rest.resource"
  } ],
  "versionAlgorithmString": null,
  "fhir_id": null,
  "version": "4.0.1",
  "contact": [ {
    "telecom": [ {
      "value": "http://hl7.org/special/committees/fhir.htm",
      "system": "url"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}