Is it possible to add laser_retro to an actor?

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I am creating a simulation which consists of a car using gpu_lasers. To filter different object types I want to label them with an unique value. To accomplish this I'm using the laser_retro tag, to create different intensities for the point clouds. The problem I'm facing now is that the actors sdf-file doesn't contain a visual tag. Is there a way to circumvent this problem and implement laser_retro also for actors?

Different kinds of actors should also be able to have an unique laser_retro value to distinguish them.