code: def test_flip_point_list(self):
      point = [
          np.random.uniform(low=0.0, high=32.0, size=(12, 2)),
          np.random.uniform(low=0.0, high=32.0, size=(10, 2)),
      ]
  
      out = flip_point(point, size=(34, 32), y_flip=True)
      for i, pnt in enumerate(point):
          pnt_expected = pnt.copy()
          pnt_expected[:, 0] = 34 - pnt[:, 0]
          np.testing.assert_equal(out[i], pnt_expected)
  
      out = flip_point(point, size=(34, 32), x_flip=True)
      for i, pnt in enumerate(point):
          pnt_expected = pnt.copy()
          pnt_expected[:, 1] = 32 - pnt[:, 1]
          np.testing.assert_equal(out[i], pnt_expected)
  
file_path: chainercv/tests/transforms_tests/point_tests/test_flip_point.py
imports: import unittest
  import numpy
  from chainer import testing
  from chainercv.transforms import flip_point
label_desc: Use image node_id 2 for calling the TestFlipPoint obj's underlying member method code with example usage: obj.test_flip_point_list() without return types