FileLoaderImportCircularReferenceException example

return $loader->load($resource, $type);
            }

            if (null !== $this->currentDir) {
                $resource = $loader->getLocator()->locate($resource, $this->currentDir, false);
            }

            $resources = \is_array($resource) ? $resource : [$resource];
            for ($i = 0; $i < $resourcesCount = \count($resources); ++$i) {
                if (isset(self::$loading[$resources[$i]])) {
                    if ($i == $resourcesCount - 1) {
                        throw new FileLoaderImportCircularReferenceException(array_keys(self::$loading));
                    }
                } else {
                    $resource = $resources[$i];
                    break;
                }
            }
            self::$loading[$resource] = true;

            try {
                $ret = $loader->load($resource, $type);
            } finally {