def __init__(self, scene_id=None, session_id=None, originator=Originator.USER, velocity=Velocity.DEFAULT):
super().__init__(Command.GW_ACTIVATE_SCENE_REQ)<EOL>self.scene_id = scene_id<EOL>self.session_id = session_id<EOL>self.originator = originator<EOL>self.priority = Priority.USER_LEVEL_2<EOL>self.velocity = velocity<EOL>
Init Frame.