code: def map_to_rgb(y):
      return (
          np.concatenate(
              [y, np.zeros((y.shape[0], y.shape[1], 1))], axis=-1
          )
          * 255
      ).astype("uint8")
  
imports: import typing
  import cv2
  import numpy
  import tensorflow
  import efficientnet.tfkeras
  from tensorflow import keras
  from .None import tools
label_desc: Use image node_id 7 for calling a global function with example usage: map_to_rgb(y) and returns: unknown