code: def _maybe_encode_splittable_default(flag_attrs):
      default = flag_attrs.get("default")
      if isinstance(default, list):
          flag_attrs["default"] = flag_util.join_splittable_flag_vals(
              default
          )
  
imports: import argparse
  import json
  import logging
  import sys
  from guild import entry_point_util
  from guild import flag_util
  from guild import log
  from guild import python_util
  from guild import util
label_desc: Use image node_id 18 for calling a global function with example usage: _maybe_encode_splittable_default(flag_attrs) without return types