Does vimscript have a "stat()" command?

I'm looking to automatically invoke the (tpope or chrisbra) "SudoEdit" function when the file is root owned. I've set up a call to (unixland) "stat" via systemlist() but it seems like vimscript should be able to find the file owner. I'm likely missing something, but I've not found it yet. Is there a way to test file ownership in vimscript?

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