code: def setUpClass(cls):
      cls.kwargs = {
          "connection_data": {
              "database_id": "example-db",
              "instance_id": "test-instance",
              "project": "your-project-id",
          }
      }
      cls.handler = CloudSpannerHandler(
          "test_cloud_spanner_handler", **cls.kwargs
      )
  
file_path: mindsdb/mindsdb/integrations/handlers/cloud_spanner_handler/tests/test_cloud_spanner_handler.py
imports: import unittest
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
  from mindsdb.integrations.handlers.cloud_spanner_handler.cloud_spanner_handler import CloudSpannerHandler
label_desc: Use image node_id 1 for calling the CloudSpannerHandlerTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types