public Set<Interest> getRandomInterests(Random random) {
Set<Interest> interests = new HashSet<Interest>();
int count = random.nextInt(13);
for (int i = 0; i < count; i++) {
int number = random.nextInt(13);
Interest interest = Interest.findInterest((long) number);
if (interest != null && !interests.contains(interest)) {
interests.add(interest);
}
}
return interests;