code: def test_config_explicit_version_table_schema(self):
      context = self.make_one(
          dialect_name="sqlite",
          opts={"version_table_schema": "explicit"},
      )
      eq_(context._version.schema, "explicit")
  
imports: from sqlalchemy import Column
  from sqlalchemy import inspect
  from sqlalchemy import MetaData
  from sqlalchemy import String
  from sqlalchemy import Table
  from alembic import migration
  from alembic.testing import assert_raises
  from alembic.testing import assert_raises_message
  from alembic.testing import config
  from alembic.testing import eq_
  from alembic.testing import mock
  from alembic.testing.fixtures import TestBase
  from alembic.util import CommandError
label_desc: Use image node_id 8 for calling the TestMigrationContext obj's underlying member method code with example usage: obj.test_config_explicit_version_table_schema() without return types