Update orchestration/src/main/java/com/sap/ai/sdk/orchestration/spring/OrchestrationSpringChatDelta.java

Co-authored-by: Alexander Dümont <[email protected]>

Author: CharlesDuboisSAP

orchestration/src/main/java/com/sap/ai/sdk/orchestration/spring/OrchestrationSpringChatDelta.java

@@ -51,13 +51,12 @@ static Generation toGeneration(@Nonnull final LLMChoice choice) {
 
   // will be fixed once the generated code add a discriminator which will allow this class to extend
   // CompletionPostResponseStreaming
-  @SuppressWarnings("unchecked")
+  @Nonnull
   private static String getContent(@Nonnull final LLMChoice choice) {
-    val message = (Map<String, Object>) choice.getCustomField("delta");
-    if (message != null && message.get("content") != null) {
-      return message.get("content").toString();
-    }
-    return "";
+    return choice.getCustomField("delta") instanceof Map<?, ?> delta
+            && delta.get("content") instanceof String content
+        ? content
+        : "";
   }
 
   @Nonnull