lithium\data\entity\Document::offsetUnset PHP Метод

Allows document fields to be unset as array keys, i.e. unset($document['_id']).

public offsetUnset ( string $key ) : void
$key	string	The name of a field in an individual document.
Результат	void

    public function offsetUnset($key)
    {
        return $this->__unset($key);
    }

Document