code: def _diff_cmd(args, path):
      return (
          args.cmd or _config_diff_cmd(path) or _default_diff_cmd(path)
      )
  
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 15 for calling a global function with example usage: _diff_cmd(args, path) and returns: unknown