id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
1248463174,PR_kwDOAMm_X844drcZ,6637,Improved DataArray typing,43316012,closed,0,,,5,2022-05-25T17:54:54Z,2022-05-29T14:02:22Z,2022-05-27T16:03:10Z,COLLABORATOR,,0,pydata/xarray/pulls/6637,"- [x] Tests added

This PR improves typing of `DataArray` class methods.
Main change is that `T_DataArray` is used whenever possible.

I have left everything untouched that would cause problems with mypy (there are some mypy bugs) or require larger typing efforts in other areas.

Main problems are `argmin` and `argmax`.","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/6637/reactions"", ""total_count"": 3, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 3, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull