code: def test_scroll():
      pass
  
imports: import decimal
  import importlib
  import math
  import numbers
  import os
  import random
  import sys
  import numpy
  import pytest
  from moviepy import AudioClip, AudioFileClip, BitmapClip, ColorClip, VideoClip, VideoFileClip
  from moviepy.audio.fx import audio_delay, audio_fadein, audio_fadeout, audio_normalize, multiply_stereo_volume, multiply_volume
  from moviepy.tools import convert_to_seconds
  from moviepy.video.fx import blackwhite, crop, even_size, fadein, fadeout, freeze, freeze_region, invert_colors, loop, lum_contrast, make_loopable, margin, mask_and, mask_or, mirror_x, mirror_y, multiply_color, multiply_speed, resize, rotate, time_mirror, time_symmetrize
label_desc: Use image node_id 28 for calling a global function with example usage: test_scroll() without return types