When certain events are triggered, they will be triggered with a hint. This hint can be used to limit your listener to only being executed when it's needed, increasing performance.<br />
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If an event is triggered with a hint, the potential hint values will be listed in the event description above. If you specify a hint here, your listener will only be run if your hint matches the hint provided when the event is triggered.<br />
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<strong>Note:</strong> If the hint is a class name, you should omit the leading \ character.