code: func (s *lockBasedTxSimulator) SetStateMultipleKeys(namespace string, kvs map[string][]byte) error {
  	for k, v := range kvs {
  		if err := s.SetState(namespace, k, v); err != nil {
  			return err
  		}
  	}
  	return nil
  }
docs: // SetStateMultipleKeys implements method in interface `ledger.TxSimulator`