private static Collection<String> getSubjectIds(final Subjects subjects) { return subjects.stream() .map(Subject::getId) .map(SubjectId::toString) .collect(Collectors.toSet()); }
private static Collection<String> getSubjectIds(final Subjects subjects) { return subjects.stream() .map(Subject::getId) .map(SubjectId::toString) .collect(Collectors.toSet()); }