With the direct dispatching mode, method invocations are made directly to the controller.
使用直接调度模式，直接对控制器进行方法调用。
Subclasses may override this method to perform special dispatching of action messages.
子类可以重写这个对象发送命令消息给特定的对象。
Subclasses may override this method to perform special dispatching of action messages.
子类可以重写这个对象发送命令消息给特定的对象。
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