How do I mirror animation keys in blender 2.8

I m struggling to mirror the set of animation keys and not finding way to do it. Most tutorials on yourube tells about character animation mirror. But I did not find any clue on how to mirros animation keys on object to X or Y axis in viewport.

Just a ref - I found one addon for blender 2.7 “flip animation” but its not useful in 2.8

can anyone help?