private void addFiles(final Path dir,
                          final List<Path> files,
                          final String feed,
                          final String extension) {
        try (final DirectoryStream<Path> stream = Files.newDirectoryStream(dir, feed + "*." + extension)) {
            stream.forEach(files::add);
        } catch (final IOException e) {
            throw new UncheckedIOException(e);
        }
    }
NOTE some of the input data for this test is buried in the following zip file so you will need
to crack it open to see what is being loaded.
stroom/stroom-core/src/test/resources/samples/input/ZIP_TEST-DATA_SPLITTER-EVENTS~1.zip
stroom-app/src/test/java/stroom/pipeline/task/TranslationTest.java