Item::__call

public function __call($name, $arguments)
{
	$method = mb_substr($name, 0, 3);
	if (in_array($method, ['set', 'get']))
	{
		$key = lcfirst(mb_substr($name, 3));
		return call_user_func_array(array($this, $method), array_merge([$key], $arguments));
	}

	throw new ArgumentException("Method `$name` not found.");
}