public Builder mergeData(
                im.turms.server.common.access.client.dto.notification.TurmsNotification.Data value) {
            if (dataBuilder_ == null) {
                if (((bitField0_ & 0x00000020) != 0)
                        && data_ != null
                        && data_ != im.turms.server.common.access.client.dto.notification.TurmsNotification.Data
                                .getDefaultInstance()) {
                    getDataBuilder().mergeFrom(value);
                } else {
                    data_ = value;
                }
            } else {
                dataBuilder_.mergeFrom(value);
            }
            if (data_ != null) {
                bitField0_ |= 0x00000020;
                onChanged();
            }
            return this;
        }
<code>.im.turms.proto.TurmsNotification.Data data = 7;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/notification/TurmsNotification.java