code: def test_close_to_FAIR(self):
      # 10 pixel error in scale of 500px bbox
      self.assertReferenceChecks(
          device_option=caffe2_pb2.DeviceOption(),
          op=self.op,
          inputs=[self.heatmaps_in, self.bboxes_in],
          reference=heatmap_FAIR_keypoint_ref,
          threshold=10,
      )
  
file_path: pytorch/caffe2/python/operator_test/heatmap_max_keypoint_op_test.py
imports: import numpy
  import torch
  import sys
  import unittest
  from scipy import interpolate
  import caffe2.python.hypothesis_test_util
  from caffe2.python import core, utils
  from caffe2.proto import caffe2_pb2
  import caffe2.python.operator_test.detectron_keypoints
label_desc: Use image node_id 2 for calling the TestHeatmapMaxKeypointOp obj's underlying member method code with example usage: obj.test_close_to_FAIR() without return types