}

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

    /**

        assertThat(activation.getRequiredInactiveProfileIds(), containsInAnyOrder("test1", "test2"));
        assertThat(activation.getOptionalInactiveProfileIds(), containsInAnyOrder("test3", "test4"));

        activation = new ProfileActivation();
        performProfileActivation(parser.parse(options, new String[] {"-P", "-test1,+test2"}), activation);

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

        final Set<String> notFoundOptionalProfiles = optionalProfiles.stream()
                .filter(rap -> !allAvailableProfiles.contains(rap))
                .collect(toSet());