@Override
			public void mouseMoved( MouseEvent e ) {
				lastX = e.getX();
				lastY = e.getY();
				inspect( lastX, lastY );
			}
Installs a key listener into the application that allows enabling and disabling
the UI inspector with the given keystroke (e.g. "ctrl shift alt X").

@param activationKeys a keystroke (e.g. "ctrl shift alt X"), or {@code null} to use "ctrl shift alt X"
flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/FlatInspector.java