@Override
    public String toString() {
        return "CompactStreamObjectRequest{" +
            "objectId=" + objectId +
            ", objectSize=" + objectSize +
            ", streamId=" + streamId +
            ", startOffset=" + startOffset +
            ", endOffset=" + endOffset +
            ", streamEpoch=" + streamEpoch +
            ", attributes=" + attributes +
            ", sourceObjectIds=" + sourceObjectIds +
            ", operations=" + operations +
            '}';
    }
The source objects' id of the stream object.
s3stream/src/main/java/com/automq/stream/s3/objects/CompactStreamObjectRequest.java