code: def users():
      
      from invenio_groups.models import Group, Membership, \
          PrivacyPolicy, SubscriptionPolicy
  
      admin = accounts.datastore.create_user(
          email='admin@inveniosoftware.org',
          password=encrypt_password('123456'),
          active=True,
      )
      reader = accounts.datastore.create_user(
          email='reader@inveniosoftware.org',
          password=encrypt_password('123456'),
          active=True,
      )
  
      admins = Group.create(name='admins', admins=[admin])
      for i in range(10):
          Group.create(name='group-{0}'.format(i), admins=[admin])
      Membership.create(admins, reader)
      db.session.commit()
docs: Load default users and groups.