@Override
    public String toString() {
        return getClass().getSimpleName() + "[#" + msgId + ", channel=" + channel
                                          + (isAsync() ? ", async" : ", sync") 
                                          + ", objId=" + objId 
                                          + ", procId=" + procId 
                                          + ", args.length=" + (args == null ? 0 : args.length) 
                                          + "]";
    }
Used internally to send RPC call information to
 the other end of a connection for execution.

 @author    Paul Speed
jme3-networking/src/main/java/com/jme3/network/service/rpc/msg/RpcCallMessage.java