presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/file/FileHiveMetastore.java/FileHiveMetastore/getPermissionsDirectory
class FileHiveMetastore:    private Path getPermissionsDirectory(Table table)
    {
        return new Path(getTableMetadataDirectory(table), PRESTO_PERMISSIONS_DIRECTORY_NAME);
    }