private function _setSiteWideFieldTypeDefinitions()
 {
     if ($this->hasBeenCalled('__filed_types_admin_page_framework')) {
         return;
     }
     $_oBuiltInFieldTypeDefinitions = new AdminPageFramework_Form_Model___BuiltInFieldTypeDefinitions('admin_page_framework', $this->oMsg);
     self::$_aFieldTypeDefinitions['admin_page_framework'] = apply_filters('field_types_admin_page_framework', $_oBuiltInFieldTypeDefinitions->get());
 }