{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "http://hl7.org/fhir/json-schema/Duration",
  "$ref": "#/definitions/Duration",
  "description": "see http://hl7.org/fhir/json.html#schema for information about the FHIR Json Schemas",
  "definitions": {
    "Duration": {
      "allOf": [
        {
          "$ref": "Quantity#/definitions/Quantity"
        },
        {
          "description": "A length of time.",
          "properties": {}
        }
      ]
    }
  }
}