Added convenience getContent

README.md

@@ -185,10 +185,10 @@ See [an example pom in our Spring Boot application](e2e-test-app/pom.xml)
 final OpenAiChatCompletionOutput result =
     OpenAiClient.forModel(GPT_35_TURBO).chatCompletion("Hello World! Why is this phrase so famous?");
 
-final String resultMessage = result.getChoices().get(0).getMessage().getContent();
+final String resultMessage = result.getContent();
 ```
 
-### Chat completion message history
+### Message history
 
 ```java
 final var systemMessage =
@@ -201,7 +201,7 @@ final var request =
 final OpenAiChatCompletionOutput result =
     OpenAiClient.forModel(GPT_35_TURBO).chatCompletion(request);
 
-final String resultMessage = result.getChoices().get(0).getMessage().getContent();
+final String resultMessage = result.getContent();
 ```
 
 See [an example in our Spring Boot application](e2e-test-app/src/main/java/com/sap/ai/sdk/app/controllers/OpenAiController.java)

foundation-models/openai/src/main/java/com/sap/ai/sdk/foundationmodels/openai/model/OpenAiChatCompletionOutput.java

@@ -2,6 +2,7 @@
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import java.util.List;
+import java.util.Objects;
 import javax.annotation.Nonnull;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
@@ -25,4 +26,16 @@ public class OpenAiChatCompletionOutput extends OpenAiCompletionOutput {
   @JsonProperty("system_fingerprint")
   @Getter(onMethod_ = @Nonnull)
   private String systemFingerprint;
+
+  /**
+   * Get the message content from the output.
+   *
+   * <p>Note: If there are multiple choices only the first one is returned
+   *
+   * @return the message content or empty string.
+   */
+  @Nonnull
+  public String getContent() {
+    return Objects.requireNonNullElse(getChoices().get(0).getMessage().getContent(), "");
+  }
 }