code: def _augment_coords(self, coords, param):
      do, h, w = param
      if do:
          if self.code == 0:
              coords[:, 1] = h - coords[:, 1]
          elif self.code == 1:
              coords[:, 0] = w - coords[:, 0]
      return coords
  
imports: import sys
  import numpy
  import cv2
  import unittest
  from .base import ImageAugmentor, AugmentorList
  from .imgproc import Contrast
  from .noise import SaltPepperNoise
  from .misc import Flip, Resize
label_desc: Use image node_id 4 for calling the LegacyFlip obj's underlying member method code with example usage: obj._augment_coords(coords, param) and returns: coords