public void initialize(DiskStoreID diskStoreId) {
      opCode = OPLOG_DISK_STORE_ID;
      this.diskStoreId = diskStoreId;
      size = OPLOG_DISK_STORE_REC_SIZE;
    }
How many bytes it will be when serialized
geode-core/src/main/java/org/apache/geode/internal/cache/Oplog.java