return numberOwner.get(number);
}
public ArrayList<SubscriberCallPair> getAllCalls(String number) {
if (!PhoneChecker.isNumberCorrect(number)) {
throw new InvalidNumberException("Check number you've entered!");
}
ArrayList<SubscriberCallPair> result = new ArrayList<SubscriberCallPair>();
for (PriorityQueue<SubscriberEntry> q : values()) {