code: def test_basic(self) -> None:
      dodge = Dodge()
      t = bt.transform("foo", dodge)
      assert t == Field(field="foo", transform=dodge)
  
imports: from __future__ import annotations
  import pytest
  from bokeh.core.property.vectorization import Expr, Field
  from bokeh.models import CategoricalColorMapper, CategoricalMarkerMapper, CategoricalPatternMapper, CumSum, Dodge, EqHistColorMapper, FactorRange, Jitter, LinearColorMapper, LogColorMapper, Stack
  from tests.support.util.api import verify_all
  import bokeh.transform
label_desc: Use image node_id 1 for calling the Test_transform obj's underlying member method code with example usage: obj.test_basic() without return types