Update README.md

alexcheng1982 · alexcheng1982 · commit ed919d71c2c6 · 2026-01-28T13:20:23.000+13:00
diff --git a/README.md b/README.md
@@ -9,4 +9,5 @@ Extra Library for Google Agent Development Kit
 - File based artifact service
 - Spring AI Vector Store based memory service
 - Callbacks
-    - Context state injection
+    - Context state injection
+    - Context state value conversation, from a JSON string / a value to an object
