docs: public void setTransmitters(Collection<Transmitter> transmitters) {
      if (transmitters == null) {
        this.transmitters = null;
        return;
      }
      int size = transmitters.size();
      if (size == 0) {
        this.transmitters = null;
        return;
      }
      this.transmitters = transmitters.toArray(new Transmitter[] {});
  
    }