public Builder clearData() {
            bitField0_ &= ~0x00000020;
            data_ = null;
            if (dataBuilder_ != null) {
                dataBuilder_.dispose();
                dataBuilder_ = null;
            }
            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