GridFieldAddNewMultiClass::setClasses PHP Метод

    public function setClasses(array $classes, $default = null)
    {
        $this->classes = $classes;
        if ($default) {
            $this->defaultClass = $default;
        }
        return $this;
    }

 function getModularCMSFields($relationName = 'Modules', $title = 'Content Modules')
 {
     $fields = array();
     $GLOBALS['_CONTENT_MODULE_PARENT_PAGEID'] = $this->owner->ID;
     $area = $this->owner->obj($relationName);
     if ($area && $area->exists()) {
         $fields[] = HeaderField::create($relationName . 'Header', $title, 2);
         $fields[] = GridField::create($relationName, $title, $area->Modules(), GridFieldConfig_RecordEditor::create()->addComponent(new GridFieldOrderableRows('SortOrder'))->removeComponentsByType('GridFieldAddNewButton')->addComponent($add = new GridFieldAddNewMultiClass()));
         if (($allowed_modules = $this->owner->Config()->get('allowed_modules')) && is_array($allowed_modules) && count($allowed_modules)) {
             if (isset($allowed_modules[$relationName])) {
                 $add->setClasses($allowed_modules[$relationName]);
             } else {
                 $add->setClasses($allowed_modules);
             }
         } else {
             // Remove the base "ContentModule" from allowed modules.
             $classes = array_values(ClassInfo::subclassesFor('ContentModule'));
             sort($classes);
             if (($key = array_search('ContentModule', $classes)) !== false) {
                 unset($classes[$key]);
             }
             $add->setClasses($classes);
         }
     } else {
         $fields[] = LiteralField::create('SaveFirstToAddModules', '<div class="message">You must save first before you can add modules.</div>');
     }
     return $fields;
 }