code: public DeviceTypesInfoEnvelope getDeviceTypesInfo(String dtid) throws ApiException {
          ApiResponse<DeviceTypesInfoEnvelope> resp = getDeviceTypesInfoWithHttpInfo(dtid);
          return resp.getData();
      }
docs: Read a device type device management information.
  Read a device type device management information.
  @param dtid Device type ID. (required)
  @return DeviceTypesInfoEnvelope
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body