code: @Deprecated
      public void registerMessageHandler (String name, MessageHandler handler)
      {
          // create our handler map if necessary
          if (_msghandlers == null) {
              _msghandlers = Maps.newHashMap();
          }
          _msghandlers.put(name, handler);
      }
docs: Registers a particular message handler instance to be used when processing message events
  with the specified name.
  
  @param name the message name of the message events that should be handled by this handler.
  @param handler the handler to be registered.
  
  @deprecated Use dynamically bound methods instead. See {@link DynamicListener}.