### Question:
QuestionPaperGenerator { public static String getFileName(String prefix) { return prefix + System.currentTimeMillis(); }  static File generateQuestionPaper(Node node); static Map<String, Object> fetchChildDetails(Node node); static Map<String, Object> getAssessmentDataMap(Map<String, Object> childData); static String getFileName(String prefix);  }### Answer:
@Test public void testGetFileName() { String fileName = QuestionPaperGenerator.getFileName("html_"); Assert.assertNotNull(fileName); }