public function dynamic($class)
 {
     $component = $this->_getView()->data;
     $dynamicClass = Kwf_Component_Abstract_Admin::getComponentClass($component->componentClass, $class);
     if (!class_exists($dynamicClass)) {
         $dynamicClass = 'Kwf_Component_Dynamic_' . $class;
     }
     if (!class_exists($dynamicClass)) {
         throw new Kwf_Exception("Dynamic Class not found: {$dynamicClass}");
     }
     $config = array('class' => $dynamicClass, 'arguments' => array_slice(func_get_args(), 1));
     return $this->_getRenderPlaceholder($component->componentId, $config);
 }