private JPanel createComboBoxPanel() {

		JPanel panel = new JPanel();
		panel.setLayout(new BorderLayout());
		panel.setBorder(new TitledBorder("Current Projects"));
		projectComboBox = new GComboBox<>();
		DefaultComboBoxModel<String> model = new DefaultComboBoxModel<>();
		projectComboBox.setModel(model);
		model.addElement("defaultProject");
		panel.add(projectComboBox, BorderLayout.CENTER);
		projectComboBox.addActionListener(this);

		return panel;
	}
Create the combo box panel that shows list of project names that
are currently open, including the active project.
Ghidra/Features/Base/src/main/java/ghidra/framework/main/AbstractDataTreeDialog.java