public static WALProtos.BulkLoadDescriptor toBulkLoadDescriptor(TableName tableName,
    ByteString encodedRegionName, Map<byte[], List<Path>> storeFiles,
    Map<String, Long> storeFilesSize, long bulkloadSeqId) {
    return toBulkLoadDescriptor(tableName, encodedRegionName, storeFiles, storeFilesSize,
      bulkloadSeqId, null, true);
  }
Generates a marker for the WAL so that we propagate the notion of a bulk region load throughout
the WAL.
@param tableName         The tableName into which the bulk load is being imported into.
@param encodedRegionName Encoded region name of the region which is being bulk loaded.
@param storeFiles        A set of store files of a column family are bulk loaded.
@param storeFilesSize    Map of store files and their lengths
@param bulkloadSeqId     sequence ID (by a force flush) used to create bulk load hfile name
@return The WAL log marker for bulk loads.
hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ProtobufUtil.java