src/java.base/share/classes/java/lang/System.java

@@ -52,10 +52,11 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.Properties;
 import java.util.PropertyPermission;
 import java.util.ResourceBundle;
+import java.util.Set;
 import java.util.function.Supplier;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Stream;
 
 import jdk.internal.module.ModuleBootstrap;

@@ -2155,8 +2156,13 @@
             }
 
             public byte[] getBytesUTF8NoRepl(String s) {
                 return StringCoding.getBytesUTF8NoRepl(s);
             }
+
+            public Set<String> getDeclaredValueTypeNames(Class<?> current) {
+                return current.getDeclaredValueTypeNames();
+            }
+
         });
     }
 }