code: def test_get_topological_levels_1_aliasing(self):
      cg = CGFull()
      g = (
          cg.edges(pd.DataFrame({"s": ["a"], "d": ["b"]}), "s", "d")
          .nodes(
              pd.DataFrame({"n": ["a", "b"], "degree": ["x", "y"]}), "n"
          )
          .get_topological_levels()
      )
      assert g._nodes.to_dict(orient="records") == [
          {"n": "a", "level": 0, "degree": "x"},
          {"n": "b", "level": 1, "degree": "y"},
      ]
  
imports: import os, pandas, pytest, unittest
  from graphistry.compute import ComputeMixin
  from graphistry.plotter import PlotterBase
  from graphistry.tests.common import NoAuthTestCase
label_desc: Use image node_id 9 for calling the TestComputeMixin obj's underlying member method code with example usage: obj.test_get_topological_levels_1_aliasing() without return types