code: def test_multi_data_model_create_with_model_arg_only(mxnet_model):
      model = MultiDataModel(
          name=MODEL_NAME,
          model_data_prefix=VALID_MULTI_MODEL_DATA_PREFIX,
          model=mxnet_model,
      )
  
      assert model.model_data_prefix == VALID_MULTI_MODEL_DATA_PREFIX
      assert model.model == mxnet_model
      assert hasattr(model, "role") is False
      assert hasattr(model, "image_uri") is False
  
imports: from __future__ import absolute_import
  import os
  import pytest
  from mock import MagicMock, Mock, call, patch
  from sagemaker.multidatamodel import MULTI_MODEL_CONTAINER_MODE
  from sagemaker.multidatamodel import MultiDataModel
  from sagemaker.mxnet import MXNetModel, MXNetPredictor
label_desc: Use image node_id 7 for calling a global function with example usage: test_multi_data_model_create_with_model_arg_only(mxnet_model) without return types