Use context variable to detect whether transformed

When a DataTransformer returns the original resource as a fallback, a context key is set so when repeating the serialization/normalization we can populate the extended jsonld data

Author: silverbackdan

src/JsonLd/Serializer/ItemNormalizer.php

@@ -65,6 +65,7 @@ public function supportsNormalization($data, $format = null): bool
      */
     public function normalize($object, $format = null, array $context = [])
     {
+
         $objectClass = $this->getObjectClass($object);
         $outputClass = $this->getOutputClass($objectClass, $context);
         if (null !== $outputClass && !isset($context[self::IS_TRANSFORMED_TO_SAME_CLASS_CONTEXT_KEY])) {

src/Serializer/AbstractItemNormalizer.php

@@ -114,6 +114,7 @@ public function hasCacheableSupportsMethod(): bool
      */
     public function normalize($object, $format = null, array $context = [])
     {
+
         if (!($isTransformed = isset($context[self::IS_TRANSFORMED_TO_SAME_CLASS_CONTEXT_KEY])) && $outputClass = $this->getOutputClass($this->getObjectClass($object), $context)) {
             if (!$this->serializer instanceof NormalizerInterface) {
                 throw new LogicException('Cannot normalize the output because the injected serializer is not a normalizer');
@@ -645,6 +646,7 @@ protected function getDataTransformer($data, string $to, array $context = []): ?
      * For a given resource, it returns an output representation if any
      * If not, the resource is returned.
      */
+
     protected function transformOutput($object, array $context = [], string $outputClass = null)
     {
         if (null === $outputClass) {