code: def retract(self, safety_margin=10):
          '''
          Move the pipette's mount upwards and away from the deck
  
          Parameters
          ----------
          safety_margin: int
              Distance in millimeters awey from the limit switch,
              used during the mount's `fast_home()` method
          '''
          self.previous_placeable = None  # it is no longer inside a placeable
          self.robot.poses = self.instrument_mover.fast_home(
              self.robot.poses, safety_margin)
          return self retract(self, safety_margin=10):
          '''
          Move the pipette's mount upwards and away from the deck
  
          Parameters
          ----------
          safety_margin: int
              Distance in millimeters awey from the limit switch,
              used during the mount's `fast_home()` method
          '''
          self.previous_placeable = None  # it is no longer inside a placeable
          self.robot.poses = self.instrument_mover.fast_home(
              self.robot.poses, safety_margin)
          return self
docs: Move the pipette's mount upwards and away from the deck
  
          Parameters
          ----------
          safety_margin: int
              Distance in millimeters awey from the limit switch,
              used during the mount's `fast_home()` method