code: def serialize_data(data):
      """serialize_data"""
      if data is None:
          return None
      return numpy_serialize_data(data)
  
file_path: PGL/pgl/utils/mp_reader.py
imports: import logging
  import multiprocessing
  import copy
  import numpy
  import time
  from multiprocessing import Queue
  import threading
  from collections import namedtuple
label_desc: Use image node_id 1 for calling a global function with example usage: serialize_data(data) and returns: numpy_serialize_data, None