call site 2 for path.svnwc.relto
path/testing/common.py - line 155
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   def test_visit_nofilter(self):
       l = []
       for i in self.root.visit():
->         l.append(i.relto(self.root))
       assert "sampledir" in l
       assert self.root.sep.join(["sampledir", "otherfile"]) in l