def get_persister(self):
"""Return the persister
:return: the current persister instance
:rtype: :class:`plumpy.Persister`
"""
from aiida.engine import persistence
if self._persister is None:
self._persister = persistence.AiiDAPersister()
return self._persister
def get_persister(self) -> 'AiiDAPersister':
"""Return the persister
:return: the current persister instance
"""
from aiida.engine import persistence
if self._persister is None:
self._persister = persistence.AiiDAPersister()
return self._persister