static long parseSnapshotSize(Cell c) throws InvalidProtocolBufferException {
    ByteString bs =
      UnsafeByteOperations.unsafeWrap(c.getValueArray(), c.getValueOffset(), c.getValueLength());
    return QuotaProtos.SpaceQuotaSnapshot.parseFrom(bs).getQuotaUsage();
  }
Parses the snapshot size from the given Cell's value.
hbase-client/src/main/java/org/apache/hadoop/hbase/quotas/QuotaTableUtil.java