code: def __len__(self, /) -> int:
      ...
  
file_path: catboost/contrib/python/numpy/py3/numpy/array_api/_typing.py
imports: from __future__ import annotations
  import sys
  from typing import Any, Literal, Sequence, Type, Union, TypeVar, Protocol
  from ._array_object import Array
  from numpy import dtype, int8, int16, int32, int64, uint8, uint16, uint32, uint64, float32, float64
label_desc: Use image node_id 2 for calling the NestedSequence obj's underlying member method code with example usage: obj.__len__() without return types