code: def broadcast(client, sender, msg_name, dest_name=None, block=None):
      """broadcast a message from one engine to all others."""
      dest_name = msg_name if dest_name is None else dest_name
      client[sender].execute("com.publish(%s)" % msg_name, block=None)
      targets = client.ids
      targets.remove(sender)
      return client[targets].execute(
          "%s=com.consume()" % dest_name, block=None
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: broadcast(client, sender, msg_name, dest_name, block) and returns: client