action tfl_mode_get_active_service_types {
  label: "Returns the service type active for a mode.
\n            Currently only supports tube"
  provider: tfl
  method: GET
  path: "/Mode/ActiveServiceTypes"
  encoding: json
  output: {
    type: "array"
    items: {
      type: "object"
      properties: {
        mode: {
          type: "string"
        }
        serviceType: {
          type: "string"
        }
      }
    }
  }
}