code: def _multiply_uint8(img, multiplier):
      img = img.astype(np.float32)
      return np.multiply(img, multiplier)
  
imports: from __future__ import division
  from typing import Optional, Sequence, Union
  from warnings import warn
  import cv2
  import numpy
  import skimage
  from albumentations import random_utils
  from albumentations.augmentations.utils import MAX_VALUES_BY_DTYPE, _maybe_process_in_chunks, clip, clipped, ensure_contiguous, is_grayscale_image, is_rgb_image, non_rgb_warning, preserve_channel_dim, preserve_shape
label_desc: Use image node_id 42 for calling a global function with example usage: _multiply_uint8(img, multiplier) and returns: np