def flow_rate(self, new_flow_rate: Dict[str, float]) -> None:
        """ Update the speeds (in uL/s) for the pipette.

        :param new_flow_rate: A dict containing at least one of 'aspirate'
                              and 'dispense', mapping to new speeds in uL/s.
        """
        self._hw_manager.hardware.set_flow_rate(self._mount, **new_flow_rate)
Update the speeds (in uL/s) for the pipette.

        :param new_flow_rate: A dict containing at least one of 'aspirate'
                              and 'dispense', mapping to new speeds in uL/s.