*/
    List<String> getActiveProfileIds();

    /**
     * Gets the identifiers of those profiles that should be deactivated by explicit demand.
     *
     * @return The identifiers of those profiles to deactivate, never {@code null}.
     */
    List<String> getInactiveProfileIds();

    /**

        checkBuildPluginWithArtifactId(
                outsidePlugins,
                "plugin-all-profiles",
                "Outside ||${project.basedir}||",
                "<plugin-all-profiles-out>Outside ||${project.basedir}||</plugin-all-profiles-out>");

        // =============================================
        Profile activeProfile = originalModel.getProfiles().stream()

    }

    private List<Profile> interpolateActivations(
            List<Profile> profiles, DefaultProfileActivationContext context, DefaultModelProblemCollector problems) {
        if (profiles.stream()
                .map(org.apache.maven.api.model.Profile::getActivation)
                .noneMatch(Objects::nonNull)) {
            return profiles;
        }
        final Interpolator xform = new RegexBasedInterpolator();

     * {@code <groupId>:<artifactId>:<version>} for a POM profile or {@code external} for profiles from the
     * {@code settings.xml}.
     *
     * @return The identifiers of all injected profiles, indexed by the source from which the profiles originated, never
     *         {@code null}.
     */
    public Map<String, List<String>> getInjectedProfileIds() {
        return this.injectedProfileIds;
    }

    /**

     *     <li>Project properties (optional)</li>
     *     <li>User properties (highest precedence)</li>
     * </ul>
     * Note: Project properties contains properties injected from profiles, if applicable. Their precedence is
     * {@code profile > project}, hence active profile property may override project property.
     * <p>

        if (!errors.isEmpty()) {
            throw errors.get(0);
        }

        return profiles;
    }

    /* (non-Javadoc)
     * @see org.apache.maven.profiles.ProfileManager#addProfiles(java.util.List)
     */
    public void addProfiles(List<Profile> profiles) {
        for (Profile profile1 : profiles) {
            addProfile(profile1);
        }
    }

/**
 * Calculates the active profiles among a given collection of profiles.
 *
 */
public interface ProfileSelector {

    /**
     * Determines the profiles which are active in the specified activation context. Active profiles will eventually be
     * injected into the model.
     *
     * @param profiles The profiles whose activation status should be determined, must not be {@code null}.

     *         not refer to a known model or has no active profiles.
     */
    @Nonnull
    List<Profile> getActivePomProfiles(@Nonnull String modelId);

    /**
     * Gets the external profiles that were active during model building. External profiles are those that were
     * contributed by {@link ModelBuilderRequest#getProfiles()}.
     *

        assertEquals(modelPrerequisites, builder.build().getPrerequisites());
    }

    // Profiles are neither inherited nor injected
    @Test
    void testMergeModel_Profiles() {
        Model parent = Model.newBuilder()
                .profiles(Collections.singletonList(Profile.newInstance()))
                .build();
        Model model = Model.newInstance();

            Model model, List<Profile> profiles, ModelBuilderRequest request, ModelProblemCollector problems) {
        Model result = CACHE.computeIfAbsent(model, k -> new ConcurrentHashMap<>())
                .computeIfAbsent(profiles, l -> doInjectProfiles(model, profiles));
        return result == KEY ? model : result;
    }

    private Model doInjectProfiles(Model model, List<Profile> profiles) {
        Model orgModel = model;