private boolean canOpen(){
  for (  final INaviProject project : m_projects) {
    if (project.isLoaded()) {
      return false;
    }
  }
  return true;
}

private boolean canOpen ( ) { for ( final INaviProject project : m_projects ) { if ( project . isLoaded ( ) ) { return false ; } } return true ; }
determines whether all nodes for which the menu is built are unloaded .
