code: def adjust_hue(image, delta):
      """Adjust hue of an image.
  
      Args
          image: Image to adjust.
          delta: An interval between -1 and 1 for the amount added to the hue channel.
                 The values are rotated if they exceed 180.
      """
      image[..., 0] = np.mod(image[..., 0] + delta * 180, 180)
      return image
  
imports: from __future__ import division
  import numpy
  import cv2
  from PIL import Image
  from .transform import change_transform_origin
label_desc: Use image node_id 13 for calling a global function with example usage: adjust_hue(image, delta) and returns: image