Cache.php
public function getOrCreateFile($filename, array $conditions = array(), $function, $actual = false)
    {
        return $this->getOrCreate($filename, $conditions, $function, true, $actual);
    }
public function getOrCreateFile($filename, array $conditions = array(), $function, $actual = false)
    {
        return $this->getOrCreate($filename, $conditions, $function, true, $actual);
    }
Alias to getOrCreate with $file = true

@param string $filename the cache file name
@param array $conditions an array of conditions about expiration
@param \Closure $function the closure to call if the file does not exist
@param bool $actual returns the actual cache file
@return string
@throws \InvalidArgumentException