Add java docs

Signed-off-by: ghdcksgml1 <[email protected]>
(cherry picked from commit cb11592)
Signed-off-by: ghdcksgml1 <[email protected]>

Author: ghdcksgml1

spring-ai-core/src/main/java/org/springframework/ai/chat/client/advisor/api/AdvisedResponseStreamUtils.java

@@ -5,8 +5,19 @@
 
 import java.util.function.Predicate;
 
+/**
+ * A stream utility class to provide support methods handling {@link AdvisedResponse}.
+ */
 public final class AdvisedResponseStreamUtils {
 
+	/**
+	 * Returns a predicate that checks whether the provided {@link AdvisedResponse}
+	 * contains a {@link ChatResponse} with at least one result having a non-empty
+	 * finish reason in its metadata.
+	 *
+	 * @return a {@link Predicate} that evaluates whether the finish reason exists
+	 *         within the response metadata.
+	 */
 	public static Predicate<AdvisedResponse> onFinishReason() {
 		return advisedResponse -> {
 			ChatResponse chatResponse = advisedResponse.response();

spring-ai-core/src/test/java/org/springframework/ai/chat/client/advisor/api/AdvisedResponseStreamUtilsTest.java

@@ -13,6 +13,11 @@
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
 
+/**
+ * Unit tests for {@link AdvisedResponseStreamUtils}.
+ *
+ * @author ghdcksgml1
+ */
 class AdvisedResponseStreamUtilsTest {
 
 	@Nested