code: def test_validation_unsupported_model_server_type(
      self, mock_serveSettings
  ):
      builder = ModelBuilder(model_server="invalid_model_server")
      self.assertRaisesRegex(
          Exception,
          "%s is not supported yet! Supported model servers: %s"
          % (builder.model_server, supported_model_server),
          builder.build,
          Mode.SAGEMAKER_ENDPOINT,
          mock_role_arn,
          mock_session,
      )
  
imports: from __future__ import absolute_import
  from unittest.mock import MagicMock, patch, Mock
  import unittest
  from pathlib import Path
  from sagemaker.serve.builder.model_builder import ModelBuilder
  from sagemaker.serve.mode.function_pointers import Mode
  from sagemaker.serve.utils.types import ModelServer
label_desc: Use image node_id 3 for calling the TestModelBuilder obj's underlying member method code with example usage: obj.test_validation_unsupported_model_server_type(mock_serveSettings) without return types