code: def test_from_existing_mlmodel(self):
      ml_model = MLModel(self.spec)
      compiled_model_path = ml_model.get_compiled_model_path()
  
      with TemporaryDirectory() as temp_dir:
          dst_path = temp_dir + "/foo.mlmodelc"
          copytree(compiled_model_path, dst_path)
          del ml_model
          self._test_compile_model_path(dst_path)
  
file_path: coremltools/coremltools/test/neural_network/test_compiled_model.py
imports: from shutil import copytree, rmtree
  from tempfile import TemporaryDirectory
  import pytest
  from coremltools import ComputeUnit
  from coremltools.models import CompiledMLModel, MLModel
  from coremltools.models.utils import compile_model, load_spec, save_spec
  from coremltools.proto import Model_pb2
label_desc: Use image node_id 6 for calling the TestCompiledModel obj's underlying member method code with example usage: obj.test_from_existing_mlmodel() without return types