code: public void sendBroadcast(CmsObject cms, String message, String sessionId) {
  
          sendBroadcast(cms, message, sessionId, false);
  
      }
docs: Sends a broadcast to the specified user session.<p>
  
  @param cms the OpenCms user context of the user sending the broadcast
  
  @param message the message to broadcast
  @param sessionId the OpenCms session uuid target (receiver) of the broadcast