public List<Integer> storeDialogs(List<Dialog> newDialogs)
    {
        boolean dialogsUpdated = false;
        List<Integer> updatedIds = new ArrayList<Integer>();

        for (Dialog oldDialog : this.dialogs)
        {
            for (Dialog newDialog : newDialogs)
            {
                if (newDialog.equals(oldDialog) && newDialog.getUpdatedAt().compareTo(oldDialog.getUpdatedAt()) > 0)
                {
                    dialogsUpdated = true;
                    updatedIds.add(newDialog.getUser().getId());
                }
            }
        }

        if (dialogsUpdated)
        {
            Set<Dialog> dialogsSet = new HashSet<Dialog>(this.dialogs);
            dialogsSet.removeAll(newDialogs);
            dialogsSet.addAll(newDialogs);
            setDialogs(new ArrayList<Dialog>(dialogsSet));
        }
        else if (this.dialogs.size() == 0)
        {
            setDialogs(newDialogs);
        }

        return updatedIds;
    }