code: def test_clip_with_is_mask():
      clip = BitmapClip([["RR", "GG"]], fps=1)
      assert not clip.is_mask
  
      assert clip.with_is_mask(True).is_mask
  
      assert not clip.with_is_mask(False).is_mask
  
file_path: moviepy/tests/test_Clip.py
imports: import copy
  import numpy
  import pytest
  from moviepy.Clip import Clip
  from moviepy.video.VideoClip import BitmapClip, ColorClip
label_desc: Use image node_id 2 for calling a global function with example usage: test_clip_with_is_mask() without return types