{
  "resourceType": "StructureDefinition",
  "id": "ext-Endpoint.ClientID",
  "url": "http://medmij.nl/fhir/StructureDefinition/ext-Endpoint.ClientID",
  "name": "ExtEndpointClientID",
  "title": "ext Endpoint.ClientID",
  "status": "draft",
  "publisher": "MedMij",
  "contact": [
    {
      "name": "MedMij",
      "telecom": [
        {
          "system": "email",
          "value": "info@medmij.nl",
          "use": "work"
        }
      ]
    }
  ],
  "description": "The client ID is used as an input parameter named audience in the token exchange request between PHR and the DVA authorisation server.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Endpoint"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "ext Endpoint.ClientID",
        "definition": "The client ID is used as an input parameter named audience in the token exchange request between PHR and the DVA authorisation server.",
        "comment": "The purpose of client ID is to perform impersonation during token exchange, which results in a launch token of type: _urn:medmij:token-type:launch-code_ and a `smart_launch_context` being stored in the DVA authorisation server for that client ID.\n\nThe launch token is used again as the value for the `launch` parameter in the SMART on FHIR launch URL.\n\nThe module application that receives the SMART on FHIR launch URL requests a new access token with the same client ID, including the launch token as an additional parameter from the DVA authorisation server, which includes the `smart_launch_context` in the final token response if both the launch token and client ID match.",
        "max": "1"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://medmij.nl/fhir/StructureDefinition/ext-Endpoint.ClientID"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}