code: def indexes_with_expressions(self):
      return exclusions.only_on(["postgresql", "sqlite>=3.9.0"])
  
imports: from sqlalchemy import exc
  from sqlalchemy import Index
  from sqlalchemy import text
  from alembic.testing import exclusions
  from alembic.testing.requirements import SuiteRequirements
  from alembic.util import compat
  from alembic.util import sqla_compat
label_desc: Use image node_id 54 for calling the DefaultRequirements obj's underlying member method code with example usage: obj.indexes_with_expressions() and returns: exclusions