code: def submit(self):
          
          if self.__submitted:
              raise ValueError('Cannot submit a submitted transfer')
          if not self.__initialized:
              raise ValueError(
                  'Cannot submit a transfer until it has been initialized'
              )
          if self.__doomed:
              raise DoomedTransferError('Cannot submit doomed transfer')
          self.__before_submit(self)
          self.__submitted = True
          result = libusb1.libusb_submit_transfer(self.__transfer)
          if result:
              self.__after_completion(self)
              self.__submitted = False
              raiseUSBError(result)
docs: Submit transfer for asynchronous handling.