public function __isset($name)
    {
        if ($this->has($name, true)) {
            return true;
        } else {
            return parent::__isset($name);
        }
    }
public function __isset($name)
    {
        if ($this->has($name, true)) {
            return true;
        } else {
            return parent::__isset($name);
        }
    }
public function __isset ( $ name ) { if ( $ this -> has ( $ name , true ) ) { return true ; } else { return parent :: __isset ( $ name ) ; } }
Checks if a property value is null.
This method overrides the parent implementation by checking if the named component is loaded.
@param string $name the property name or the event name
@return boolean whether the property value is null
Checks if a property value is null . This method overrides the parent implementation by checking if the named component is loaded .