code: def get_large_window_reader():
      reader = ImageReader(["image"])
      reader.initialise(LARGE_MOD_DATA, LARGE_MOD_TASK, dynamic_list)
      return reader
  
imports: from __future__ import absolute_import, division, print_function
  import os
  import numpy
  import tensorflow
  from niftynet.contrib.csv_reader.csv_reader import CSVReader
  from niftynet.contrib.csv_reader.sampler_csvpatch import CSVPatchSampler
  from niftynet.engine.image_window import N_SPATIAL
  from niftynet.engine.sampler_uniform_v2 import rand_spatial_coordinates
  from niftynet.io.image_reader import ImageReader
  from niftynet.io.image_sets_partitioner import ImageSetsPartitioner
  from niftynet.utilities.util_common import ParserNamespace
  from tests.niftynet_testcase import NiftyNetTestCase
label_desc: Use image node_id 2 for calling a global function with example usage: get_large_window_reader() and returns: reader