Flow\Compiler::compile PHP Method

    public function compile($name, $target, $indent = 0)
    {
        if (!($this->fp = fopen($target, 'wb'))) {
            throw new \RuntimeException('unable to create target file: ' . $target);
        }
        $this->node->compile($name, $this, $indent);
        fclose($this->fp);
    }