code: def _save_meta(root_dir, metadict, allow_overwrite=False):
      for name, datum in metadict.items():
          filename = os.path.join(root_dir, "%s.json" % name)
          LocalMetadataProvider._dump_json_to_file(
              filename, datum, allow_overwrite=allow_overwrite
          )
  
imports: import collections
  import glob
  import json
  import os
  import random
  import tempfile
  import time
  from collections import namedtuple
  from metaflow.exception import MetaflowInternalError, MetaflowTaggingError
  from metaflow.metadata.metadata import ObjectOrder
  from metaflow.metaflow_config import DATASTORE_LOCAL_DIR
  from metaflow.metadata import MetadataProvider
  from metaflow.tagging_util import MAX_USER_TAG_SET_SIZE, validate_tags
label_desc: Use image node_id 24 for calling the LocalMetadataProvider obj's underlying member method code with example usage: obj._save_meta(root_dir, metadict, allow_overwrite) without return types