code: def to_load_data_type_string(cls, module):
      data_module = module & (cls.NODE | cls.EDGE)
      if data_module == 0:
          return "none"
      elif data_module == cls.NODE:
          return "node"
      elif data_module == cls.EDGE:
          return "edge"
      elif data_module == cls.NODE | cls.EDGE:
          return "all"
      else:
          assert False
  
file_path: euler/euler/python/start_service.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import ctypes
  import os
  import threading
  import sys
  import time
  import multiprocessing
label_desc: Use image node_id 1 for calling the Module obj's underlying member method code with example usage: obj.to_load_data_type_string(cls, module) and returns: str, str, str, str