docs: def generate_security_data(self):
          """Generate a dict of security data for "initial" data."""
          timestamp = int(time.time())
          security_dict = {
              'content_type': str(self.target_object._meta),
              'object_pk': str(self.target_object._get_pk_val()),
              'timestamp': str(timestamp),
              'security_hash': self.initial_security_hash(timestamp),
          }
          return security_dict