function _buildAdminToolbar()
 {
     if (!ZMG_ADMIN) {
         return $this->throwError('Function may only be called in admin mode.');
     }
     $assets = zmgEnv::getToolbarAssets();
     zmgCallAbstract($assets['classHelper'], $assets['commands']['title'], zmgFactory::getConfig()->get('meta/title'));
     zmgCallAbstract($assets['classHelper'], $assets['commands']['back']);
     zmgCallAbstract($assets['classHelper'], $assets['commands']['spacer']);
     $this->appendConstant('toolbar_node', '"' . $assets['node'] . '"');
     $this->appendConstant('toolbar_buttonclass', '"' . $assets['classButton'] . '"');
 }