code: def widerface_label():
      labels_map = {"face": 0}
      return labels_map
  
file_path: PaddleDetection/ppdet/data/source/widerface.py
imports: import os
  import numpy
  from ppdet.core.workspace import register, serializable
  from .dataset import DetDataset
  from ppdet.utils.logger import setup_logger
label_desc: Use image node_id 1 for calling a global function with example usage: widerface_label() and returns: labels_map