private List<Lobby> getLobbies(List<Party> parties, int maxTeamSize) {
    // Lobby: List<Party> team1, List<Party> team2
    // Party: List<String> members
    List<Lobby> lobbies = new ArrayList<>();

    // Create as many lobbies with given parties as possible. Parties have size of n, with max size of maxTeamSize. First entries of parties should be matched first.

    return lobbies;
}