What is the method for incorporating the X-close option into a JavaFX button?

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To incorporate the X-close option into a JavaFX button, you can use the following code:

button.setOnAction(e -> { Stage stage = (Stage) button.getScene().getWindow(); stage.close(); });

This code adds an event handler to the button that creates a reference to the current stage and then closes the stage when the button is clicked.