code: def training_roidbs(self):
      return self.load(add_gt=True, add_mask=cfg.MODE_MASK)
  
file_path: tensorpack/examples/FasterRCNN/dataset/coco.py
imports: import json
  import numpy
  import os
  import tqdm
  from tensorpack.utils import logger
  from tensorpack.utils.timer import timed_operation
  from config import config
  from dataset import DatasetRegistry, DatasetSplit
label_desc: Use image node_id 5 for calling the COCODetection obj's underlying member method code with example usage: obj.training_roidbs() and returns: self