How to use the yeelight.transitions.randomloop function in yeelight

def random(duration):
    """Random colors."""
    click.echo("Random colors!")
    transitions = tr.randomloop(duration=duration)
    flow = yeelight.Flow(count=0, transitions=transitions)
    for bulb in BULBS:
        bulb.start_flow(flow)

EFFECT_POLICE: yee_transitions.police,
                EFFECT_POLICE2: yee_transitions.police2,
                EFFECT_CHRISTMAS: yee_transitions.christmas,
                EFFECT_RGB: yee_transitions.rgb,
                EFFECT_RANDOM_LOOP: yee_transitions.randomloop,
                EFFECT_LSD: yee_transitions.lsd,
                EFFECT_SLOWDOWN: yee_transitions.slowdown,
            }

            if effect in self.custom_effects_names:
                flow = Flow(**self.custom_effects[effect])
            elif effect in effects_map:
                flow = Flow(count=0, transitions=effects_map[effect]())
            elif effect == EFFECT_FAST_RANDOM_LOOP:
                flow = Flow(
                    count=0, transitions=yee_transitions.randomloop(duration=250)
                )
            elif effect == EFFECT_WHATSAPP:
                flow = Flow(count=2, transitions=yee_transitions.pulse(37, 211, 102))
            elif effect == EFFECT_FACEBOOK:
                flow = Flow(count=2, transitions=yee_transitions.pulse(59, 89, 152))
            elif effect == EFFECT_TWITTER:
                flow = Flow(count=2, transitions=yee_transitions.pulse(0, 172, 237))

            try:
                self._bulb.start_flow(flow, light_type=self.light_type)
            except BulbException as ex:
                _LOGGER.error("Unable to set effect: %s", ex)

if effect:
            if effect == EFFECT_STOP:
                self._bulb.stop_flow(light_type=self.light_type)
                return

            effects_map = {
                EFFECT_DISCO: yee_transitions.disco,
                EFFECT_TEMP: yee_transitions.temp,
                EFFECT_STROBE: yee_transitions.strobe,
                EFFECT_STROBE_COLOR: yee_transitions.strobe_color,
                EFFECT_ALARM: yee_transitions.alarm,
                EFFECT_POLICE: yee_transitions.police,
                EFFECT_POLICE2: yee_transitions.police2,
                EFFECT_CHRISTMAS: yee_transitions.christmas,
                EFFECT_RGB: yee_transitions.rgb,
                EFFECT_RANDOM_LOOP: yee_transitions.randomloop,
                EFFECT_LSD: yee_transitions.lsd,
                EFFECT_SLOWDOWN: yee_transitions.slowdown,
            }

            if effect in self.custom_effects_names:
                flow = Flow(**self.custom_effects[effect])
            elif effect in effects_map:
                flow = Flow(count=0, transitions=effects_map[effect]())
            elif effect == EFFECT_FAST_RANDOM_LOOP:
                flow = Flow(
                    count=0, transitions=yee_transitions.randomloop(duration=250)
                )
            elif effect == EFFECT_WHATSAPP:
                flow = Flow(count=2, transitions=yee_transitions.pulse(37, 211, 102))
            elif effect == EFFECT_FACEBOOK:
                flow = Flow(count=2, transitions=yee_transitions.pulse(59, 89, 152))