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