code: def test_valid(self) -> None:
      prop = bcpv.DashPattern()
  
      assert prop.is_valid("")
      assert prop.is_valid(())
      assert prop.is_valid([])
  
      assert prop.is_valid("solid")
      assert prop.is_valid("dashed")
      assert prop.is_valid("dotted")
      assert prop.is_valid("dotdash")
      assert prop.is_valid("dashdot")
  
      assert prop.is_valid([1, 2, 3])
      assert prop.is_valid("1 2 3")
  
imports: from __future__ import annotations
  import pytest
  import base64
  import datetime
  import tempfile
  from io import BytesIO
  from pathlib import Path
  from typing import Literal
  import numpy
  import PIL.Image
  from bokeh.core.enums import MarkerType, ToolIcon
  from bokeh.core.has_props import HasProps
  from tests.support.util.api import verify_all
  from _util_property import _TestHasProps, _TestModel
  import bokeh.core.property.visual
label_desc: Use image node_id 4 for calling the TestDashPattern obj's underlying member method code with example usage: obj.test_valid() without return types