code: def get_large_model_config(self):
      return MptConfig.from_pretrained("mosaicml/mpt-7b")
  
imports: import math
  import unittest
  from transformers import MptConfig, is_torch_available
  from transformers.testing_utils import require_bitsandbytes, require_torch, require_torch_gpu, slow, torch_device
  from ...generation.test_utils import GenerationTesterMixin
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, ids_tensor, random_attention_mask
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 2 for calling the MptModelTester obj's underlying member method code with example usage: obj.get_large_model_config() and returns: MptConfig