presto-rcfile/src/main/java/io/prestosql/rcfile/RcFileCompressor.java/CompressedSliceOutput/getCompressedSlices
class CompressedSliceOutput:        public List<Slice> getCompressedSlices()
        {
            checkState(closed, "Stream has not been closed");
            checkState(!destroyed, "Stream has been destroyed");
            return bufferedOutput.getSlices();
        }