As discussed in the mailing list, unfortunately this might break APIs
due to the subtle differences between new and old-style classes (see #2398).
This reverts commit d4afa1554b from PR #2179.
As discussed in the mailing list, unfortunately this might break APIs
due to the subtle differences between new and old-style classes (see #2398).
This reverts commit d4afa1554b from PR #2179.