The length of the device token as a two-byte integer value in network order.
设备令牌的长度为两个字节的整数值的网络字节序。
In addition, the row format of value compression has a two-byte overhead per row.
此外，值压缩的行格式会为每一行占用两个字节。
In addition, the row format of value compression has a two-byte overhead per row.
此外，值压缩的行格式会为每一行占用两个字节。
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