code: def __len__(self) -> int:
      return len(self.iterator)
  
file_path: labml/client/labml/internal/monitor/mix.py
imports: from typing import Tuple, Union, Callable, Any, List, cast, Sized, TYPE_CHECKING, Iterator
label_desc: Use image node_id 4 for calling the Enumerate obj's underlying member method code with example usage: obj.__len__() and returns: len