In fact, the class is called CustomEvent.

事实上，这个类称为CustomEvent。

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CustomEvent describes custom events that can be pretty much anything.

CustomEvent描述了自定义事件，可以是几乎任何东西。

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As part of the one-time setup, provide an event handler subscribed to that specific type of CustomEvent on the WjcDispenser instance or class.

作为一次性设置的一部分，在WjcDispenser实例或类上提供一个订阅到特定类型的CustomEvent的事件处理程序。

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