code: def config_command(args):
      config = get_user_input()
      if args.config_file is not None:
          config_file = args.config_file
      else:
          if not os.path.isdir(cache_dir):
              os.makedirs(cache_dir)
          config_file = default_yaml_config_file
  
      if config_file.endswith(".json"):
          config.to_json_file(config_file)
      else:
          config.to_yaml_file(config_file)
      print(f"accelerate configuration saved at {config_file}")
  
file_path: accelerate/src/accelerate/commands/config/config.py
imports: import argparse
  import os
  from accelerate.utils import ComputeEnvironment
  from .cluster import get_cluster_input
  from .config_args import cache_dir, default_config_file, default_yaml_config_file, load_config_from_file
  from .config_utils import _ask_field, _ask_options, _convert_compute_environment
  from .sagemaker import get_sagemaker_input
label_desc: Use image node_id 3 for calling a global function with example usage: config_command(args) without return types