code: def check_training_gradient_checkpointing(
      self, gradient_checkpointing_kwargs=None
  ):
      self.skipTest("Not applicable.")
  
imports: from transformers.testing_utils import require_torch
label_desc: Use image node_id 2 for calling the AdapterModelTesterMixin obj's underlying member method code with example usage: obj.check_training_gradient_checkpointing(gradient_checkpointing_kwargs) without return types