code: def search_last_modified_identities(db, after):
      
      with db.connect() as session:
          query = session.query(Identity.id).\
              filter(Identity.last_modified >= after)
          ids = [id_.id for id_ in query.order_by(Identity.id).all()]
  
      return ids
docs: Look for the uuids of identities modified on or after a given date.
  
      This function returns the uuids of identities modified on
      the given date or after it. The result is a list of uuids
      identities.
  
      :param db: database manager
      :param after: look for identities modified on or after this date
  
      :returns: a list of uuids of identities modified