code: def _config_diff_cmd(path):
      cmd_map = _coerce_config_diff_command(_diff_command_config())
      if not cmd_map:
          return None
      if not path:
          return cmd_map.get("default")
      return _config_diff_cmd_for_path(path, cmd_map)
  
imports: import logging
  import os
  import re
  import subprocess
  from guild import cli
  from guild import click_util
  from guild import cmd_impl_support
  from guild import config
  from guild import run_util
  from guild import util
  from .None import remote_impl_support
  from .None import runs_impl
label_desc: Use image node_id 16 for calling a global function with example usage: _config_diff_cmd(path) and returns: _config_diff_cmd_for_path, None, cmd_map