Phalcon\Mvc\Model\MetaData\Base::read PHP Method

    public function read($key)
    {
        return $this->getCacheBackend()->get($this->prepareKey($key), $this->options['lifetime']);
    }

 /**
  * {@inheritdoc}
  * @param  string $key
  * @return array
  */
 public function read($key)
 {
     return parent::read($key) ?: null;
 }