当隐藏组件时,如何将Miglayout行高缩小为零

import net.miginfocom.swing.MigLayout;
import javax.swing.*;

public class ExampleFrame extends JFrame {
    public ExampleFrame() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new MigLayout("hidemode 2"));

        // 添加组件
        JButton button1 = new JButton("Button 1");
        JButton button2 = new JButton("Button 2");

        add(button1, "wrap");  // 换行
        add(button2);

        pack();
        setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new ExampleFrame());
    }
}