SubscribeSequence

预处理级别。 使用 PRE 所注册的所有事件处理器会在接收到事件的时候以同步顺序的方式依次执行， 而后再交由下游的 processor 处理。

普通级别。始终在所有 PRE 之后执行， 且会作为一个整体在异步中处理。

Returns a representation of an immutable list of all enum entries, in the order they're declared.

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Returns an array containing the constants of this enum type, in the order they're declared.