public int getMeetingInviteIndexByUsernameAndMeetingID(int meetingInviteID, String username){
        for(MeetingInvite meetingInvite : meetingInvites){
            if(meetingInviteID == meetingInvite.getMeetingID() && username.equals(meetingInvite.getUsername())) return meetingInvites.indexOf(meetingInvite);
        }

        return -1;
    }