public static Set<StudentTestQuestion> findStudentTestQuestions(final Question question,
public static Set<StudentTestQuestion> findStudentTestQuestions(final Registration registration,
    public static Set<StudentTestQuestion> findStudentTestQuestions(final Question question,            final DistributedTest distributedTest) {        return findStudentTestQuestions(question.getStudentTestsQuestionsSet(), distributedTest);    }