private FileStoreType getFileStoreType(final String streamTypeName) {
        return switch (streamTypeName) {
            case InternalStreamTypeNames.SEGMENT_INDEX,
                    InternalStreamTypeNames.BOUNDARY_INDEX,
                    InternalStreamTypeNames.MANIFEST -> FileStoreType.dat;
            default -> FileStoreType.bgz;
        };
    }
Gets all files associated with a parent.
stroom-data/stroom-data-store-impl-fs/src/main/java/stroom/data/store/impl/fs/FsPathHelper.java