Closes gh-15728

* pr/15694:
  Polish "Remove redundant interface modifiers"
  Remove redundant interface modifiers

Closes gh-15694

See gh-15694

Closes gh-15659

Closes gh-15658

This reverts commit 6b952f5b.

See gh-15689

Closes gh-15689

Closes gh-15688

Closes gh-15687

Closes gh-15686

Closes gh-15685

Closes gh-15683

Closes gh-15682

Closes gh-15681

Closes gh-15680

Closes gh-15657

Closes gh-15101

Closes gh-15418

Closes gh-15415

Closes gh-15411

Closes gh-15414

Closes gh-15531