presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/SemiTransactionalHiveMetastore.java/DirectoryCleanUpTask/DirectoryCleanUpTask
class DirectoryCleanUpTask:        public DirectoryCleanUpTask(HdfsContext context, Path path, boolean deleteEmptyDirectory)
        {
            this.context = context;
            this.path = path;
            this.deleteEmptyDirectory = deleteEmptyDirectory;
        }