HasGuardedHandlers#register_tmp_handler

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Register a temporary handler. Once triggered, the handler will be de-registered

@param [Symbol, nil] type a classification to separate handlers/events into channels Omitting the classification will create a handler for all events.
@param [guards] guards take a look at the guards documentation

@yield [Object] trigger_object the incoming event

@return [String] handler ID for later manipulation
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