code: def pascalvoc_label():
      labels_map = {
          "aeroplane": 0,
          "bicycle": 1,
          "bird": 2,
          "boat": 3,
          "bottle": 4,
          "bus": 5,
          "car": 6,
          "cat": 7,
          "chair": 8,
          "cow": 9,
          "diningtable": 10,
          "dog": 11,
          "horse": 12,
          "motorbike": 13,
          "person": 14,
          "pottedplant": 15,
          "sheep": 16,
          "sofa": 17,
          "train": 18,
          "tvmonitor": 19,
      }
      return labels_map
  
file_path: PaddleDetection/ppdet/data/source/voc.py
imports: import os
  import numpy
  import xml.etree.ElementTree
  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: pascalvoc_label() and returns: labels_map