code: def do_dump(self, arg):
          ''' Output all bytes waiting in output queue. '''
          if not self.arm.is_connected():
              print(self.style.error('Error: ', 'Arm is not connected.'))
              return
          print(self.arm.dump()f do_dump(self, arg):
          ''' Output all bytes waiting in output queue. '''
          if not self.arm.is_connected():
              print(self.style.error('Error: ', 'Arm is not connected.'))
              return
          print(self.arm.dump())
docs: Output all bytes waiting in output queue.