package lambdatests;

import java.awt.event.ActionEvent;


import javax.swing.JButton;

public class MySecondLambda {
    void foo() {
        JButton btn = new JButton();
        btn.addActionListener((ActionEvent e) -> System.out.println(e));
        btn.addActionListener(this::actionPerformed);
    }

    public void actionPerformed(ActionEvent e) {        
    }
}


If you try to find usages of method MySecondLambda.actionPerformed(ActionEvent) nothing is found.
But in fact the usage is in code of: this::actionPerformed.