* Also call {@link MigrationTaskListener#groupsListUpdated(Object)}.
*/
protected void newGroup() {
InputDialog dialog = new InputDialog(control.getShell(),
"New Migration Group", "Select a name for the group", "",
new IInputValidator() {
public String isValid(String newText) {
if (newText.length() <= 0) {
return "The name must contains at least one character.";
}
for (MigrationGroup group : task.getMigrationGroups()) {