private final Map<String, ActivationSettings> activations = new HashMap<>();

    /**
     * Mimics the pre-Maven 4 "active profiles" list.
     * @deprecated Use {@link #getRequiredActiveProfileIds()} and {@link #getOptionalActiveProfileIds()} instead.
     */
    @Deprecated
    public List<String> getActiveProfiles() {
        return Collections.unmodifiableList(new ArrayList<>(getProfileIds(pa -> pa.active)));
    }

    /**

        HashSet<String> activeProfileId =
                new HashSet<>(request.getProfileActivation().getRequiredActiveProfileIds());
        activeProfileId.addAll(request.getProfileActivation().getOptionalActiveProfileIds());

        return request.getProfiles().stream()
                .filter(profile -> activeProfileId.contains(profile.getId()))
                .map(ModelBase::getProperties)

        assertThat(activation.getRequiredActiveProfileIds(), containsInAnyOrder("test1", "test2"));
        assertThat(activation.getOptionalActiveProfileIds(), containsInAnyOrder("test3", "test4"));

        activation = new ProfileActivation();
        performProfileActivation(

        final Set<String> allAvailableProfiles = getAllProfiles(session);

        final Set<String> optionalProfiles = new HashSet<>();
        optionalProfiles.addAll(profileActivation.getOptionalActiveProfileIds());
        optionalProfiles.addAll(profileActivation.getOptionalInactiveProfileIds());

        final Set<String> notFoundOptionalProfiles = optionalProfiles.stream()