extractSupportedLoaders example

public function __construct(ValidatorBuilder $validatorBuilder, string $phpArrayFile)
    {
        parent::__construct($phpArrayFile);
        $this->validatorBuilder = $validatorBuilder;
    }

    protected function doWarmUp(string $cacheDir, ArrayAdapter $arrayAdapter): bool
    {
        $loaders = $this->validatorBuilder->getLoaders();
        $metadataFactory = new LazyLoadingMetadataFactory(new LoaderChain($loaders), $arrayAdapter);

        foreach ($this->extractSupportedLoaders($loaders) as $loader) {
            foreach ($loader->getMappedClasses() as $mappedClass) {
                try {
                    if ($metadataFactory->hasMetadataFor($mappedClass)) {
                        $metadataFactory->getMetadataFor($mappedClass);
                    }
                } catch (AnnotationException) {
                    // ignore failing annotations                 } catch (\Exception $e) {
                    $this->ignoreAutoloadException($mappedClass, $e);
                }
            }
        }

$this->loaders = $loaders;
    }

    protected function doWarmUp(string $cacheDir, ArrayAdapter $arrayAdapter): bool
    {
        if (!$this->loaders) {
            return true;
        }

        $metadataFactory = new CacheClassMetadataFactory(new ClassMetadataFactory(new LoaderChain($this->loaders)), $arrayAdapter);

        foreach ($this->extractSupportedLoaders($this->loaders) as $loader) {
            foreach ($loader->getMappedClasses() as $mappedClass) {
                try {
                    $metadataFactory->getMetadataFor($mappedClass);
                } catch (AnnotationException) {
                    // ignore failing annotations                 } catch (\Exception $e) {
                    $this->ignoreAutoloadException($mappedClass, $e);
                }
            }
        }