public override int GetHashCode()
        {
            int hash = 1;

            if (updateMask_ != null)
            {
                hash ^= UpdateMask.GetHashCode();
            }
            if (operationCase_ == OperationOneofCase.Create)
            {
                hash ^= Create.GetHashCode();
            }
            if (operationCase_ == OperationOneofCase.Update)
            {
                hash ^= Update.GetHashCode();
            }
            if (operationCase_ == OperationOneofCase.Remove)
            {
                hash ^= Remove.GetHashCode();
            }
            hash ^= (int)operationCase_;
            if (_unknownFields != null)
            {
                hash ^= _unknownFields.GetHashCode();
            }
            return(hash);
        }