code: def default_onnx_opset(self) -> int:
      return 13
  
file_path: H2O/h2o_flexgen/benchmark/third_party/transformers/src/transformers/models/longt5/configuration_longt5.py
imports: from typing import Mapping
  from ...configuration_utils import PretrainedConfig
  from ...onnx import OnnxSeq2SeqConfigWithPast
  from ...utils import logging
label_desc: Use image node_id 2 for calling the LongT5OnnxConfig obj's underlying member method code with example usage: obj.default_onnx_opset() and returns: int