docstr: A simple test to check if the quantization config is correctly serialized and deserialized
docstr_tok: ["A","simple","test","to","check","if","the","quantization","config","is","correctly","serialized","and","deserialized"]
code: def test_quantization_config_json_serialization(self):
      r"""
      A simple test to check if the quantization config is correctly serialized and deserialized
      """
      config = self.model_4bit.config
  
      self.assertTrue(hasattr(config, "quantization_config"))
  
      _ = config.to_dict()
      _ = config.to_diff_dict()
  
      _ = config.to_json_string()
  
imports: import gc
  import importlib.metadata
  import tempfile
  import unittest
  from packaging import version
  from transformers import AutoConfig, AutoModel, AutoModelForCausalLM, AutoModelForSeq2SeqLM, AutoModelForSequenceClassification, AutoTokenizer, BitsAndBytesConfig, pipeline
  from transformers.testing_utils import is_bitsandbytes_available, is_torch_available, require_accelerate, require_bitsandbytes, require_torch, require_torch_gpu, require_torch_multi_gpu, slow, torch_device
label_desc: Use image node_id 4 for calling the Bnb4BitTest obj's underlying member method code with example usage: obj.test_quantization_config_json_serialization() without return types