code: def next(self):
      next_item = self.queue.get()
      if next_item is None:
          raise StopIteration
      return next_item
  
imports: import os
  import os.path
  import queue
  import mxnet
  import pickle
  import threading
  import logging
  import numpy
  import insightface
  from insightface.utils import face_align
  import torch
  from torch.utils.data import DataLoader, Dataset
  from torchvision import transforms
  import cv2
  import albumentations
  from albumentations.pytorch import ToTensorV2
  from .augs import RectangleBorderAugmentation
label_desc: Use image node_id 3 for calling the BackgroundGenerator obj's underlying member method code with example usage: obj.next() and returns: next_item