code: def _get_image_path(self, image):
      return os.path.join(
          self._data_dir, "{}{}".format(self._split, self._year), image
      )
  
file_path: luminoth/luminoth/tools/dataset/readers/object_detection/coco.py
imports: import json
  import os
  import tensorflow
  from luminoth.tools.dataset.readers import InvalidDataDirectory
  from luminoth.tools.dataset.readers.object_detection import ObjectDetectionReader
  from luminoth.utils.dataset import read_image
label_desc: Use image node_id 6 for calling the COCOReader obj's underlying member method code with example usage: obj._get_image_path(image) and returns: os