@java.lang.Override
    public int getDeviceTypesCount() {
        return deviceTypes_.size();
    }
<code>repeated .im.turms.proto.DeviceType device_types = 3;</code>

@return The count of deviceTypes.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/user/UserOnlineStatus.java