public function all(array $filter = array())
    {
        if (count($filter) === 0) {
            return $this->configurations;
        }

        return $this->filter($this->configurations, $filter);
    }
public function all(array $filter = array())
    {
        if (count($filter) === 0) {
            return $this->configurations;
        }

        return $this->filter($this->configurations, $filter);
    }
{@inheritdoc}