AssetManager\Controller\ConsoleController::warmupAction PHP Method

    public function warmupAction()
    {
        $request = $this->getRequest();
        $purge = $request->getParam('purge', false);
        $verbose = $request->getParam('verbose', false) || $request->getParam('v', false);
        // purge cache for every configuration
        if ($purge) {
            $this->purgeCache($verbose);
        }
        $this->output('Collecting all assets...', $verbose);
        $collection = $this->assetManager->getResolver()->collect();
        $this->output(sprintf('Collected %d assets, warming up...', count($collection)), $verbose);
        foreach ($collection as $path) {
            $asset = $this->assetManager->getResolver()->resolve($path);
            $this->assetManager->getAssetFilterManager()->setFilters($path, $asset);
            $this->assetManager->getAssetCacheManager()->setCache($path, $asset)->dump();
        }
        $this->output(sprintf('Warming up finished...', $verbose));
    }