@Override
		public void valueChanged(ListSelectionEvent e) {
			if (!e.getValueIsAdjusting()) {
				DefaultListModel<String> model = (DefaultListModel<String>) previewList.getModel();
				model.clear();

				List<T> values = list.getSelectedValuesList();
				for (T value : values) {
					model.addElement(dataModel.getDescription(value));
				}
			}
		}
Listener for the preview panel which is kicked whenever a selection has been made in the
drop down. This will prompt the preview panel to change what it displays.
Ghidra/Framework/Docking/src/main/java/docking/widgets/DropDownMultiSelectionTextField.java