code: def test_Anchor(self) -> None:
      assert tuple(bce.Anchor) == (
          "top_left",
          "top_center",
          "top_right",
          "center_left",
          "center_center",
          "center_right",
          "bottom_left",
          "bottom_center",
          "bottom_right",
          "top",
          "left",
          "center",
          "right",
          "bottom",
      )
  
imports: from __future__ import annotations
  import pytest
  from bokeh.colors import named
  from bokeh.palettes import __palettes__
  from tests.support.util.api import verify_all
  import bokeh.core.enums
label_desc: Use image node_id 1 for calling the Test_bce obj's underlying member method code with example usage: obj.test_Anchor() without return types