code: def query(self, images):
      if self.pool_size == 0:
          return images
      return_images = []
      for image in images:
          image = image.reshape(
              1, image.shape[0], image.shape[1], image.shape[2]
          )
          if self.num_imgs < self.pool_size:
              self.num_imgs = self.num_imgs + 1
              self.images.append(image)
              return_images.append(image)
          else:
              p = random.uniform(0, 1)
              if p > 0.5:
                  random_id = random.randint(
                      0, self.pool_size - 1
                  )  # randint is inclusive
                  tmp = self.images[random_id].copy()
                  self.images[random_id] = image
                  return_images.append(tmp)
              else:
                  return_images.append(image)
      image_array = return_images[0].copyto(images.context)
      for image in return_images[1:]:
          image_array = nd.concat(
              image_array, image.copyto(images.context), dim=0
          )
      return image_array
  
imports: import argparse
  import random
  from mxnet import gluon, image, autograd
  from mxnet.gluon.data.vision import transforms
  from mxnet.base import numeric_types
  import gluoncv
  from gluoncv import utils
  from mxnet.gluon.data import DataLoader
  from mxnet.gluon import nn
  import mxnet.ndarray
  import mxnet
  import os
  import numpy
  from mxboard import SummaryWriter
label_desc: Use image node_id 2 for calling the ImagePool obj's underlying member method code with example usage: obj.query(images) and returns: image_array, images