def test55(self):
        self.check('aDict.nestedDict.aClass')
constructs a .dot graph from the nodes that have a value in
dataset/ETHPy150Open skyostil/tracy/src/generator/Cheetah/Tests/NameMapper.py/VFN.test55--crossover with--dataset/ETHPy150Open manahl/mdf/mdf/context.py/MDFContext.to_dot