code: def get_person_class_index():
      """Index of the person class in COCO."""
      return 1
  
file_path: dense-pose/detectron/utils/keypoints.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import cv2
  import numpy
  from detectron.core.config import cfg
  import detectron.utils.blob
label_desc: Use image node_id 2 for calling a global function with example usage: get_person_class_index() and returns: int