Indicates if the `prefix` is a parent of this path.

def lies_under(self, prefix):
        """Indicates if the `prefix` is a parent of this path.
        """
        orig_list = self.norm_case()._components()
        pref_list = self.__class__(prefix).norm_case()._components()

        return (len(orig_list) >= len(pref_list) and
                orig_list[:len(pref_list)] == pref_list)