code: def test_neither(self, xyz_levels: XYZ_Levels) -> None:
      _, _, z, levels = xyz_levels
      with pytest.raises(
          ValueError,
          match="Neither fill nor line requested in contour_data",
      ):
          from_contour(z=z, levels=levels)
  
imports: from __future__ import annotations
  import pytest
  from typing import TYPE_CHECKING
  import numpy
  from bokeh.plotting.contour import FillData, LineData, contour_data, from_contour
label_desc: Use image node_id 2 for calling the Test_from_contour obj's underlying member method code with example usage: obj.test_neither(xyz_levels) without return types