code: def setUpClass(cls):
      cls.handler = InstatusHandler(
          name="mindsdb_instatus",
          connection_data={
              "api_key": os.environ.get("INSTATUS_API_KEY")
          },
      )
  
imports: import unittest
  from mindsdb.integrations.handlers.instatus_handler.instatus_handler import InstatusHandler
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
  import pandas
  import os
label_desc: Use image node_id 1 for calling the InstatusHandlerTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types