code: @Nonnull
    public static <T> JPAExecutionResult <T> createSuccess (@Nullable final T aObj)
    {
      return new JPAExecutionResult <> (ESuccess.SUCCESS, aObj, null);
    }
docs: Create a new success object.
  
  @param aObj
  The returned value from the DB
  @return Never <code>null</code>.
  @param <T>
  Data type of provided parameter