code: def rnnt_test_helper() -> Type[RNNTTestHelper]:
      return RNNTTestHelper
  
file_path: NeMo/tests/collections/asr/conftest.py
imports: from dataclasses import dataclass
  from typing import Optional, Type
  import numpy
  import pytest
  import torch
label_desc: Use image node_id 1 for calling a global function with example usage: rnnt_test_helper() and returns: RNNTTestHelper