private void create() {
		setLayout(new BorderLayout());

		JPanel boxPanel = new JPanel();
		boxPanel.setLayout(new BoxLayout(boxPanel, BoxLayout.Y_AXIS));

		cardLayout = new CardLayout();
		cardPanel = new JPanel(cardLayout);
		cardPanel.setBorder(BorderFactory.createTitledBorder("Resolve Block Conflict"));
		ChangeListener listener = new ChangeListener() {
			@Override
			public void stateChanged(ChangeEvent e) {
				mergeManager.setApplyEnabled(true);
			}
		};
		commentPanel = new CommentsConflictPanel(listener);
		cardPanel.add(commentPanel, COMMENT_PANEL_ID);

		namePanel = new BlockConflictPanel(listener);
		cardPanel.add(namePanel, CONFLICT_PANEL_ID);

		cardLayout.show(cardPanel, CONFLICT_PANEL_ID);

		countPanel = new ConflictCountPanel();
		boxPanel.add(countPanel);
		boxPanel.add(Box.createVerticalStrut(10));
		boxPanel.add(cardPanel);

		add(boxPanel, BorderLayout.CENTER);
		add(createUseForAllCheckBox(), BorderLayout.SOUTH);
	}
Get the selected option; called after the Apply button was hit.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/memory/MemoryMergePanel.java