def add_asis(self, xmltext):
        asis = ASIS(xmltext)
        self.append(asis)
        return asis
Does the before-after sort work?
dataset/ETHPy150Open kdart/pycopia/XML/pycopia/XML/POM.py/ElementNode.add_asis--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/tasks/tests/test_topological_sort.py/TopologicalSortTestCase.test_before_after_sort_1