How to implement interaction between Gesture Recognizer and the responder chain in a system?

In iOS, Gesture Recognizer detects user gestures (e.g., tap, swipe) and, upon detection, sends an event through the responder chain. The interaction is implemented as follows:

1. The Gesture Recognizer is attached to a UIView.
2. When a gesture is recognized, it calls a target-action method.
3. If the Gesture Recognizer does not fully handle the event, it is passed along the responder chain — UIView, UIViewController, UIWindow, etc.

This allows combining gesture handling with other interface events. For example, if the Gesture Recognizer is canceled or does not trigger, the event can be handled in the standard way in the chain.

Example:

let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap))
someView.addGestureRecognizer(tapGesture)

@objc func handleTap() {
    print("Tap detected")
}

If needed, you can override UIResponder methods to intercept events not handled by the Gesture Recognizer.