Craft\MinimeeService::createCache PHP Method

    protected function createCache()
    {
        $contents = '';
        foreach ($this->assets as $asset) {
            $contents .= $this->minifyAsset($asset) . "\n";
        }
        if (!IOHelper::writeToFile($this->makePathToCacheFilename(), $contents)) {
            return false;
        }
        $this->onCreateCache(new Event($this));
        return true;
    }