private String getNewSegmentFilePath() {
        return this.segmentsPath + File.separator + String.format("%019d", this.nextFileSequence.getAndIncrement())
               + SEGMENT_FILE_POSFIX;
    }
Creates a RocksDBSegmentLogStorage builder.
@return a builder instance.
jraft-core/src/main/java/com/alipay/sofa/jraft/storage/log/RocksDBSegmentLogStorage.java