json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "search": {
              "type": "object",
              "required": [
                  "resource"
              ],
              "properties": {
                  "resource": {
                      "type": "string",
                      "format": "topic",
                      "axRole": "inlet"
                  }
              }
          },
          "locations": {
              "type": "object",
              "required": [
                  "resource"
              ],
              "properties": {
                  "resource": {
                      "type": "string",
                      "format": "topic",
                      "axRole": "outlet"
                  },
                  "searching": {
                      "type": "string",
                      "format": "topic",
                      "axRole": "outlet",
                      "axPattern": "flag",
                      "description": "Flag, indicating that geocoding using the search term is still in progress."
                  }
              }
          }
      }
  }