/**
* @param object $object
* @param \Andrew\Checker\Checker $checker
*/
public function __construct($object, Checker $checker = null)
{
is_null($checker) and $checker = new Checker();
$checker->assertObject($object, __CLASS__ . ' expects an object.');
$this->checker = $checker;
$this->object = $object;
$this->class = get_class($object);
}