docstr: Instantiate the adapter before any tests in the test case run.
code: def setUpClass(cls):
      """
      Instantiate the adapter before any tests in the test case run.
      """
      cls.adapter = SQLStorageAdapter(database_uri=None)
  
imports: from unittest import TestCase
  from chatterbot.conversation import Statement
  from chatterbot.storage.sql_storage import SQLStorageAdapter
label_desc: Use image node_id 1 for calling the SQLStorageAdapterTestCase obj's underlying member method code with example usage: obj.setUpClass(cls) without return types