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

@@ -1267,8 +1267,17 @@
                 Long.formatUnsignedLong(val, shift, buf, offset, len);
             }
             public void formatUnsignedInt(int val, int shift, char[] buf, int offset, int len) {
                 Integer.formatUnsignedInt(val, shift, buf, offset, len);
             }
+            public Object getClassData(Class<?> klass) {
+                return klass.classData();
+            }
+            public boolean casClassData(Class<?> klass, Object oldData, Object newData) {
+                return klass.casClassData(oldData, newData);
+            }
+            public int getClassRedefinedCount(Class<?> klass) {
+                return klass.classRedefinedCount();
+            }
         });
     }
 }