public function hasChild($key = null, $value = null, Collect $data = null)
    {
        if (func_num_args() < 3) {
            $data = $this->data;
            $key = $this->parent;
            $value = current(func_get_args());
        }

        $child = false;

        $data->each(function ($item) use (&$child, $key, $value) {

            if (intval($item[$key]) == intval($value) && !$child) {
                $child = true;
            }

        });

        return $child;
    }