http://hl7.org/fhir/StructureDefinition/11179-objectClassProperty|4.0.1

A quality common to all members of an object class. A property may be any feature that humans naturally use to distinguish one individual object from another. It is the human perception of a single quality of an object class in the real world. It is conceptual and thus has no particular associated means of representation by which the property can be communicated.
{
  "description": "A quality common to all members of an object class. A property may be any feature that humans naturally use to distinguish one individual object from another. It is the human perception of a single quality of an object class in the real world.  It is conceptual and thus has no particular associated means of representation by which the property can be communicated.",
  "package": "hl7.fhir.r4.core@4.0.1",
  "date": "2014-04-21T00:00:00Z",
  "derivation": "constraint",
  "publisher": "Health Level Seven International (Orders and Observations)",
  "fhirVersion": "4.0.1",
  "name": "objectClassProperty",
  "mapping": [ {
    "uri": "http://hl7.org/v2",
    "name": "HL7 v2 Mapping",
    "identity": "v2"
  }, {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  }, {
    "uri": "http://metadata-standards.org/11179/",
    "name": "ISO 11179",
    "identity": "iso11179"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "fhirversion": null,
  "title": "Object Class Property",
  "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": "caa9507b-6f80-5ef4-8c88-b4cf9971728e",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/StructureDefinition/11179-objectClassProperty",
  "identifier": null,
  "context": [ {
    "type": "element",
    "expression": "ElementDefinition.mapping"
  } ],
  "versionAlgorithmString": null,
  "fhir_id": null,
  "version": "4.0.1",
  "contact": [ {
    "telecom": [ {
      "value": "http://hl7.org",
      "system": "url"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}