code: def _named_dicts(self, memo: Optional[set] = None, prefix: str = ""):
      if memo is None:
          memo = set()
      if self not in memo:
          memo.add(self)
          yield prefix, self
          if len(prefix) > 0:
              prefix += "/"
          for name, meterdict in self._meterdicts.items():
              for m in meterdict._named_dicts(memo, prefix + name):
                  yield m
  
imports: from __future__ import annotations
  import warnings
  import json
  from typing import Dict, Union, Optional
  from collections import OrderedDict
  from .meters import Meter
label_desc: Use image node_id 11 for calling the MeterDict obj's underlying member method code with example usage: obj._named_dicts(memo, prefix) without return types