code: def hstore(self):
      return self._has_pg_extension("hstore")
  
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 35 for calling the DefaultRequirements obj's underlying member method code with example usage: obj.hstore() and returns: self