html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/859#issuecomment-221392885,https://api.github.com/repos/pydata/xarray/issues/859,221392885,MDEyOklzc3VlQ29tbWVudDIyMTM5Mjg4NQ==,2443309,2016-05-24T20:33:45Z,2016-05-24T20:33:45Z,MEMBER,"@MaximilianR - nice catch. I originally implemented the `rolling` method in `BaseDataObject` intending to scale this up to the dataset.  Time ran out and my immediate application didn't need a dataset version of the method but I never moved it out of the `BaseDataObject`. 

As you mentioned, I don't think it will be difficult to build a `rolling` method for the `Dataset`. 

As for the public/private point, I'm not sure what to say.  I just matched the implementation of `groupby_cls`.  

Glad you're enjoying the rolling method!
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