call site 3 for path.local.mksymlinkto
path/local/testing/test_posix.py - line 62
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   def test_visit_recursive_symlink(self):
       tmpdir = self.tmpdir 
       linkpath = tmpdir.join('test')
->     linkpath.mksymlinkto(tmpdir)
       visitor = tmpdir.visit(None, lambda x: x.check(link=0))
       assert list(visitor) == [linkpath]