ApiPlatform\Core\Metadata\Resource\Factory\OperationResourceMetadataFactory::create PHP Метод

    public function create(string $resourceClass) : ResourceMetadata
    {
        $resourceMetadata = $this->decorated->create($resourceClass);
        $reflectionClass = new \ReflectionClass($resourceClass);
        $isAbstract = $reflectionClass->isAbstract();
        if (null === $resourceMetadata->getCollectionOperations()) {
            $resourceMetadata = $resourceMetadata->withCollectionOperations($this->createOperations($isAbstract ? ['GET'] : ['GET', 'POST']));
        }
        if (null === $resourceMetadata->getItemOperations()) {
            $resourceMetadata = $resourceMetadata->withItemOperations($this->createOperations($isAbstract ? ['GET', 'DELETE'] : ['GET', 'PUT', 'DELETE']));
        }
        return $resourceMetadata;
    }