### Question:
GoogleCalendarUtils { static List<EventAttendee> parseAtendees(final String attendeesString) { if (ObjectHelper.isEmpty(attendeesString)) { return Collections.emptyList(); } return Splitter.on(',').trimResults().splitToList(attendeesString) .stream() .map(GoogleCalendarUtils::attendee) .collect(Collectors.toList()); } private  GoogleCalendarUtils();   }### Answer:
@Test public void shouldParseBlankAtendees() { assertThat(GoogleCalendarUtils.parseAtendees(" ")).isEmpty(); }
@Test public void shouldParseEmptyAtendees() { assertThat(GoogleCalendarUtils.parseAtendees("")).isEmpty(); }
@Test public void shouldParseNullAtendees() { assertThat(GoogleCalendarUtils.parseAtendees(null)).isEmpty(); }