code: def name():
      return "custom_post_ln"
  
file_path: DeepSpeed/tests/unit/inference/v2/modules/test_custom_module.py
imports: import pytest
  import torch
  from deepspeed.accelerator import get_accelerator
  from deepspeed.inference.v2.modules import ConfigBundle
  from deepspeed.inference.v2.modules.interfaces import DSPostNormRegistry
  from deepspeed.inference.v2.modules.configs import DSNormConfig
  from deepspeed.inference.v2.modules.implementations import cuda_post_ln
  from ...v2.inference_test_utils import allclose
label_desc: Use image node_id 1 for calling the CustomPostLNModule obj's underlying member method code with example usage: obj.name() and returns: str