public function persist($key)
    {
        $this->init();
        $result = $this->driver->persist($key);
        return (bool)$result;
    }
public function persist($key)
    {
        $this->init();
        $result = $this->driver->persist($key);
        return (bool)$result;
    }
public function persist ( $ key ) { $ this -> init ( ) ; $ result = $ this -> driver -> persist ( $ key ) ; return ( bool ) $ result ; }
Remove the expiration from a key
@param string $key
@return boolean
Remove the expiration from a key