code: def test_getpreds(self):
      pts = np.random.randint(1, high=63, size=(68, 2)).astype(
          "float32"
      )
  
      heatmaps = np.zeros((68, 256, 256))
      for i in range(68):
          if pts[i, 0] > 0:
              heatmaps[i] = draw_gaussian(heatmaps[i], pts[i], 2)
      heatmaps = np.expand_dims(heatmaps, axis=0)
  
      preds, _, _ = get_preds_fromhm(heatmaps)
  
      assert np.allclose(pts, preds, atol=5)
  
file_path: face-alignment/test/test_utils.py
imports: import sys
  import unittest
  from face_alignment.utils import *
  import numpy
  import torch
label_desc: Use image node_id 3 for calling the Tester obj's underlying member method code with example usage: obj.test_getpreds() without return types