code: def __init__(self, max_loc):
      self.max_loc = max_loc
      self.first = True
      self.take_item = False
  
imports: import math
  import os
  import pickle
  from typing import Any
  import lmdb
  import numpy
  import torch
  from mmf.utils.file_io import PathManager
label_desc: Use image node_id 1 to create a new PaddedFasterRCNNFeatureReader object  with example: obj = PaddedFasterRCNNFeatureReader(max_loc)