def on_interface_control_xfer(self, stage, request):
        # Handle standard and class-specific interface control transfers for HID devices.
        bmRequestType, bRequest, wValue, _, wLength = struct.unpack("BBHHH", request)

        recipient, req_type, _ = split_bmRequestType(bmRequestType)

        if stage == _STAGE_SETUP:
            ...
            elif req_type == _REQ_TYPE_CLASS:
                # HID Spec p50: 7.2 Class-Specific Requests
                if bRequest == _REQ_CONTROL_GET_REPORT:
                    print("GET_REPORT?")
                    return False  # Unsupported for now

    def on_interface_control_xfer(self, stage, request):
        # Handle standard and class-specific interface control transfers for HID devices.
        # added a handler for detaure reports
        bmRequestType, bRequest, wValue, _, wLength = struct.unpack("BBHHH", request)

        recipient, req_type, _ = split_bmRequestType(bmRequestType)
        if stage == _STAGE_SETUP:
            ...
            elif req_type == _REQ_TYPE_CLASS:
                # HID Spec p50: 7.2 Class-Specific Requests
                if bRequest == _REQ_CONTROL_GET_REPORT:
                    # Handle GET_REPORT (0x01), Report Type 3 = Feature 
                    report_type = wValue >> 8
                    report_id = wValue & 0xFF
                    if bRequest == _REQ_CONTROL_GET_REPORT and report_type == _REPORT_TYPE_FEATURE:
						#handle get feature requests
                        return self._on_get_feature_handler(report_id)
                    else:
                        return False  # Unsupported request

    def _on_get_feature_handler(self, report_id):
        # handle get feature reports
        # override this to return feature reports to the host
        #return False
        handlers = {
			  1: lambda: bytearray([2]),                         # iProduct str
			  2: lambda: bytearray([3]),                         # iSerialNumber str
			  3: lambda: bytearray([1]),                         # iManufacturer str
			  6: lambda: bytearray([1]),                         # Rechargable
			  7: lambda: self.status_flags,              # present status
			  8: struct.pack('<H', 480),                 # RemainingTimeLimit
			  ...
		        }
        handler = handlers.get(report_id)
        if handler:
	        data = handler()
	        return bytearray([report_id]) + data
        else:
	        print(f"{report_id=} not implemented")
	        return False

        if self.interface_str:
            strs.append(self.interface_str)
            
        # add any additional string descriptors
        # you will need to manage the indexes manually
        # ie 1st additional_str will be index 4 if interface_str is not used, otherwise 5
        if self.additional_strs:
            if isinstance(self.additional_strs, (list, tuple)):
                strs.extend(self.additional_strs)
            else:
                strs.append(self.additional_strs)