BREAKING_CHANGE: [vertexai] Make ChatSession and GenerativeModel final (#10569)

copybara-service[bot] · Zhenyi Qi · web-flow · commit 80495ada838c · 2024-03-19T13:52:09.000-07:00
PiperOrigin-RevId: 617274754

Co-authored-by: Zhenyi Qi &lt;zhenyiqi@google.com&gt;
diff --git a/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/generativeai/ChatSession.java b/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/generativeai/ChatSession.java
@@ -30,7 +30,7 @@
 import java.util.List;
 
 /** Represents a conversation between the user and the model */
-public class ChatSession {
+public final class ChatSession {
   private final GenerativeModel model;
   private List<Content> history = new ArrayList<>();
   private ResponseStream<GenerateContentResponse> currentResponseStream = null;
diff --git a/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/generativeai/GenerativeModel.java b/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/generativeai/GenerativeModel.java
@@ -33,7 +33,7 @@
 import java.util.List;
 
 /** This class holds a generative model that can complete what you provided. */
-public class GenerativeModel {
+public final class GenerativeModel {
   private final String modelName;
   private final String resourceName;
   private final VertexAI vertexAi;
