call site 1 for path.local.mksymlinkto
path/local/testing/test_posix.py - line 69
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   def test_symlink_isdir(self):
       tmpdir = self.tmpdir 
       linkpath = tmpdir.join('test')
->     linkpath.mksymlinkto(tmpdir)
       assert linkpath.check(dir=1)
       assert not linkpath.check(link=0, dir=1)