src/java.base/share/classes/java/lang/reflect/ReflectAccess.java

*** 152,157 ****
--- 152,162 ----
      }
  
      public <T> Constructor<T> copyConstructor(Constructor<T> arg) {
          return arg.copy();
      }
+ 
+     @SuppressWarnings("unchecked")
+     public <T extends AccessibleObject> T getRoot(T obj) {
+         return (T) obj.getRoot();
+     }
  }