docs: def post_mockdata_url(service_name, implementation_name,
                        url, headers, body,
                        dir_base=dirname(__file__)):
      """
      :param service_name:
          possible "sws", "pws", "book", "hfs", etc.
      :param implementation_name:
          possible values: "file", etc.
      """
      # Currently this post method does not return a response body
      response = MockHTTP()
      if body is not None:
          if "dispatch" in url:
              response.status = 200
          else:
              response.status = 201
          response.headers = {"X-Data-Source": service_name + " file mock data",
                              "Content-Type": headers['Content-Type']}
      else:
          response.status = 400
          response.data = "Bad Request: no POST body"
      return response