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

*** 287,296 ****
--- 287,301 ----
        if (getGenericSignature() != null) {
          return getGenericInfo().getReturnType();
        } else { return getReturnType();}
      }
  
+     @Override
+     Class<?>[] getSharedParameterTypes() {
+         return parameterTypes;
+     }
+ 
      /**
       * {@inheritDoc}
       */
      @Override
      public Class<?>[] getParameterTypes() {