private function setPrefixKey()
    {
        if (null !== $this->getContext()) {
            $this->_prefix_key = md5($this->getContext());
        }

        return $this;
    }
private function setPrefixKey()
    {
        if (null !== $this->getContext()) {
            $this->_prefix_key = md5($this->getContext());
        }

        return $this;
    }
private function setPrefixKey ( ) { if ( null !== $ this -> getContext ( ) ) { $ this -> _prefix_key = md5 ( $ this -> getContext ( ) ) ; } return $ this ; }
Sets the cache prefix key according to the context.

@return \BackBee\Cache\DAO\Cache
@codeCoverageIgnore
Sets the cache prefix key according to the context .