public function import(array $data)
    {
        if (count($data) !== 4) {
            throw new \InvalidArgumentException("Invalid footprint array");
        }

        $this->_type = $data[0];
        $this->_constants = $data[1];
        $this->_interfaces = $data[2];
        $this->_parent = $data[3];

        return $this;
    }