return NO_CONFLICT;
        }
        return new HasConflict(conflict.participants);
    }

    static PotentialConflict noConflict() {
        return NO_CONFLICT;
    }

    private static class HasConflict implements PotentialConflict {

        private final Set<ModuleIdentifier> participants;

        private HasConflict(Set<ModuleIdentifier> participants) {
            this.participants = participants;