code: def test_clip_by_norm_forward_backward(
      seed, ctx, func_name, clip_norm, axes
  ):
      from nbla_test_utils import cap_ignore_region, function_tester
  
      rng = np.random.RandomState(seed)
      inputs = [rng.randn(2, 3, 4, 4).astype(np.float32) * 2]
      func_args = [clip_norm, axes]
      function_tester(
          rng,
          F.clip_grad_by_norm,
          ref_clip_grad_by_norm,
          inputs,
          func_args=func_args,
          backward=[True],
          ctx=ctx,
          func_name=func_name,
          ref_grad=ref_grad_clip_by_norm,
      )
  
imports: import pytest
  import numpy
  import nnabla.functions
  from nbla_test_utils import list_context
label_desc: Use image node_id 3 for calling a global function with example usage: test_clip_by_norm_forward_backward(seed, ctx, func_name, clip_norm, axes) without return types