code: def test_no_bias() -> None:
      """
      Validate bias activation kernel with no bias.
      """
      tokens = 223
      channels = 4096
      dtype = DtypeEnum.fp16
      act_fn = ActivationType.IDENTITY
      _bias_activation_test_helper(
          tokens, channels, act_fn, dtype, use_bias=False
      )
  
file_path: DeepSpeed/tests/unit/inference/v2/kernels/core_ops/test_bias_activation.py
imports: from typing import Optional
  import pytest
  import torch
  from deepspeed.accelerator import get_accelerator
  from deepspeed.inference.v2.inference_utils import ActivationType, DtypeEnum
  from deepspeed.inference.v2.kernels.core_ops import CUDABiasActivation
  from ....v2.inference_test_utils import get_dtypes, allclose
label_desc: Use image node_id 5 for calling a global function with example usage: test_no_bias() without return types