docs: def send_feature_report(self, data, report_id=0x0):
          """ Send a Feature report to the device.
  
          Feature reports are sent over the Control endpoint as a Set_Report
          transfer.
  
          :param data:        The data to send
          :type data:         str/bytes
          :param report_id:   The Report ID to send to
          :type report_id:    int
  
          """
          self._check_device_status()
          bufp = ffi.new("unsigned char[]", len(data)+1)
          buf = ffi.buffer(bufp, len(data)+1)
          buf[0] = report_id
          buf[1:] = data
          rv = hidapi.hid_send_feature_report(self._device, bufp, len(bufp))
          if rv == -1:
              raise IOError("Failed to send feature report to HID device: {0}"
                            .format(self._get_last_error_string()))