code: def test_alter_column_autoincrement_pk_explicit_true(self):
      m1 = MetaData()
      m2 = MetaData()
  
      Table(
          "a",
          m1,
          Column("x", Integer, primary_key=True, autoincrement=True),
      )
      Table(
          "a",
          m2,
          Column("x", BigInteger, primary_key=True, autoincrement=True),
      )
  
      ops = self._fixture(m1, m2, return_ops=True)
      is_(ops.ops[0].ops[0].kw["autoincrement"], True)
  
imports: from sqlalchemy import BigInteger
  from sqlalchemy import Column
  from sqlalchemy import Integer
  from sqlalchemy import MetaData
  from sqlalchemy import Table
  from sqlalchemy.testing import in_
  from ._autogen_fixtures import AutogenFixtureTest
  from ...None import testing
  from ...testing import config
  from ...testing import eq_
  from ...testing import is_
  from ...testing import TestBase
label_desc: Use image node_id 4 for calling the AutoincrementTest obj's underlying member method code with example usage: obj.test_alter_column_autoincrement_pk_explicit_true() without return types