code: def __init__(
      self,
      batch_index: int = 0,
      class_index: int = 0,
      box_index: int = 0,
  ) -> None:
      self.batch_index_ = batch_index
      self.class_index_ = class_index
      self.box_index_ = box_index
  
file_path: onnx/onnx/reference/ops/op_non_max_suppression.py
imports: import dataclasses
  from typing import Optional, Tuple
  import numpy
  from onnx.reference.op_run import OpRun
label_desc: Use image node_id 1 to create a new SelectedIndex object  with example: obj = SelectedIndex(batch_index, class_index, box_index)