### Question:
StringUtil { @NotNull public static String generateString(int times) { Conditions.isTrue(times > 0); StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i < times; i++) { stringBuilder.append(UUID.randomUUID().toString().replace("-", "")); } return stringBuilder.toString(); }  @NotNull static String generateString(int times); @NotNull static Properties calcProperties(@NotNull String[] strings, int from); static final String RUNNER_DOWNLOAD_URL; static final String NULL_PATH; }### Answer:
@Test void testGenerateString() { Assertions.assertEquals(64, StringUtil.generateString(2).length()); }