As of OpenJFX 21, `EventTarget` has methods to add and remove event listeners.
The `instanceof` checks in `com.sun.javafx.scene.control.ListenerHelper` should be removed and replaced by a simple call to the respective interface method.
The `instanceof` checks in `com.sun.javafx.scene.control.ListenerHelper` should be removed and replaced by a simple call to the respective interface method.
- relates to
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JDK-8306021 Add event handler management to EventTarget
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- Resolved
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