code: def set_rate(self, rate):
          
          self._rate = self._player_interface_property('Rate', dbus.Double(rate))
          return self._rate
docs: Set the playback rate of the video as a multiple of the default playback speed
  
          Examples:
              >>> player.set_rate(2)
              # Will play twice as fast as normal speed
              >>> player.set_rate(0.5)
              # Will play half speed