code: def _generate_random_image(self, w: int, h: int, c: int):
      array = np.random.rand(h, w, c) * 255
      image = Image.fromarray(array.astype("uint8")).convert("RGB")
      return image
  
file_path: lightly/tests/utils/test_debug.py
imports: import math
  import unittest
  import numpy
  import torch
  from PIL import Image
  from lightly.data import collate
  from lightly.utils import debug
label_desc: Use image node_id 1 for calling the TestDebug obj's underlying member method code with example usage: obj._generate_random_image(w, h, c) and returns: image