code: def get_feature_report(report_number, buffer_size = nil)
  
        buffer_size ||= input_ep_max_packet_size
  
        mutex.synchronize do
          handle.control_transfer(
              bmRequestType: LIBUSB::REQUEST_TYPE_CLASS | LIBUSB::RECIPIENT_INTERFACE | LIBUSB::ENDPOINT_IN,
              bRequest: 0x01,   # HID Get_Report
              wValue: (3 << 8) | report_number,
              wIndex: interface,
              dataIn: buffer_size
          )
        end
  
      end
docs: Gets a feature report from the device.