code: def _concat(*paths):
      return os.path.realpath(
          os.path.sep.join((path for path in paths if path))
      )
  
imports: import os
  import sys
  import json
  import string
  import shutil
  import logging
  import coloredlogs
  import fire
  import requests
  from .._utils import run_command_with_process, compute_md5, job
label_desc: Use image node_id 3 for calling the BuildProcess obj's underlying member method code with example usage: obj._concat() and returns: os