[Java 1.14.0]: Add convenience for metadata params for orchestration grounding calls

docs-java/orchestration/chat-completion.mdx

@@ -418,6 +418,24 @@ var result = client.chatCompletion(prompt, maskedGroundingConfig);
 
 Please find [an example in our Spring Boot application](https://github.com/SAP/ai-sdk-java/tree/main/sample-code/spring-app/src/main/java/com/sap/ai/sdk/app/services/OrchestrationService.java).
 
+### Retrieving Additional Metadata
+
+To include [metadata](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/contextualized-retrieval-using-metadata-and-vector-search?locale=en-US) in the grounding result, you can set the `metadataParams` options on the `Grounding` object by providing one or more strings of the metadata keys.
+If you provide `"*"`, all metadata will be included.
+
+```java
+var groundingConfig = Grounding.create().metadataParams("foo", "bar");
+var prompt = groundingConfig.createGroundingPrompt("What does Joule do?");
+var configWithGrounding = config.withGrounding(groundingConfig);
+
+var result = client.chatCompletion(prompt, configWithGrounding);
+```
+
+Note that retrieving this additional metadata information is not supported for data repository type _help.sap.com_.
+When using grounding via _help.sap.com_ the SDK will ignore the provided metadata parameters.
+
+Please find [an example in our Spring Boot application](https://github.com/SAP/ai-sdk-java/tree/main/sample-code/spring-app/src/main/java/com/sap/ai/sdk/app/services/OrchestrationService.java).
+
 ## Streaming
 
 It's possible to pass a stream of chat completion delta elements, e.g. from the application backend to the frontend in real-time.

docs-js/orchestration/chat-completion.mdx

@@ -696,7 +696,7 @@ const response = await orchestrationClient.chatCompletion({
 By default, the optional filter property `data_repository_type` is set to `vector`.
 Set it to `help.sap.com` to retrieve context from the SAP Help Portal.
 
-Set `metadata_params` property with an array of parameter names to include [Metadata](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/metadata) in the grounding result, which can be mentioned when writing the prompt.
+Set `metadata_params` property with an array of parameter names to include [Metadata](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/contextualized-retrieval-using-metadata-and-vector-search?locale=en-US) in the grounding result, which can be mentioned when writing the prompt.
 If set the value to `'*'`, all metadata will be included.
 
 Set `data_repositories` property with an array of repository IDs to search in specific data repositories.