}

    @Test
    public void testPerf() throws IOException {
        List<String[]> data = new ArrayList<>();
        String k = null;
        for (String line : Files.readAllLines(Paths.get("src/test/resources/dag.txt"))) {
            if (line.startsWith("\t")) {
                data.add(new String[] {k, line.trim()});
            } else {
                k = line;
            }
        }

        }
    }

    private boolean fileContainsText(File referencedFile, String text) {
        try {
            for (String line : Files.readAllLines(referencedFile.toPath())) {
                if (line.contains(text)) {
                    return true;
                }
            }
        } catch (IOException e) {
            // ignore
        }

   * Files.asCharSource(file, charset).readLines()}.
   *
   * <p><b>{@link java.nio.file.Path} equivalent:</b> {@link
   * java.nio.file.Files#readAllLines(java.nio.file.Path, Charset)}.
   *
   * @param file the file to read from
   * @param charset the charset used to decode the input stream; see {@link StandardCharsets} for
   *     helpful predefined constants

   * Files.asCharSource(file, charset).readLines()}.
   *
   * <p><b>{@link java.nio.file.Path} equivalent:</b> {@link
   * java.nio.file.Files#readAllLines(java.nio.file.Path, Charset)}.
   *
   * @param file the file to read from
   * @param charset the charset used to decode the input stream; see {@link StandardCharsets} for
   *     helpful predefined constants