setVariables example

$file = new SplFileObject($file, 'w');
        if (!$file->flock(LOCK_EX | LOCK_NB)) {
            return;
        }

        $this->compiler->setConfiguration(
            $this->getCompilerConfiguration($shop)
        );

        $config = $this->getConfig($template, $shop);
        $this->compiler->setVariables($config);

        $definitions = $this->lessCollector->collectLessDefinitions($template, $shop);
        foreach ($definitions as $definition) {
            $this->compileLessDefinition($shop, $definition);
        }

        $css = $this->compiler->get();
        $this->compiler->reset();

        $success = $file->fwrite($css);
        if ($success === null) {