ApiPlatform\Core\Bridge\Symfony\Routing\ApiLoader::load PHP Метод

    public function load($data, $type = null)
    {
        $routeCollection = new RouteCollection();
        $this->loadExternalFiles($routeCollection);
        foreach ($this->resourceNameCollectionFactory->create() as $resourceClass) {
            $resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
            $resourceShortName = $resourceMetadata->getShortName();
            if (null === $resourceShortName) {
                throw new InvalidResourceException(sprintf('Resource %s has no short name defined.', $resourceClass));
            }
            if (null !== ($collectionOperations = $resourceMetadata->getCollectionOperations())) {
                foreach ($collectionOperations as $operationName => $operation) {
                    $this->addRoute($routeCollection, $resourceClass, $operationName, $operation, $resourceShortName, true);
                }
            }
            if (null !== ($itemOperations = $resourceMetadata->getItemOperations())) {
                foreach ($itemOperations as $operationName => $operation) {
                    $this->addRoute($routeCollection, $resourceClass, $operationName, $operation, $resourceShortName, false);
                }
            }
        }
        return $routeCollection;
    }