if (activeProfileIds == null) {
            activeProfileIds = new ArrayList<>();
        }

        return activeProfileIds;
    }

    @Override
    public DefaultModelBuildingRequest setActiveProfileIds(List<String> activeProfileIds) {
        if (activeProfileIds != null) {
            this.activeProfileIds = new ArrayList<>(activeProfileIds);
        } else {

        this.activeProfileIds = unmodifiable(activeProfileIds);
        return this;
    }

    @Override
    public List<String> getInactiveProfileIds() {
        return inactiveProfileIds;
    }

    /**
     * Sets the identifiers of those profiles that should be deactivated by explicit demand.
     *

     * @param activeProfileIds A {@link List} of profile IDs that must be activated.
     * @deprecated Use {@link #activateOptionalProfile(String)} or {@link #activateRequiredProfile(String)} instead.
     */
    @Deprecated
    public void overwriteActiveProfiles(List<String> activeProfileIds) {
        getActiveProfiles().forEach(this.activations::remove);
        activeProfileIds.forEach(this::activateOptionalProfile);
    }

    public List<String> getActiveProfileIds() {
        return request.getActiveProfileIds();
    }

    @Override
    public FilterModelBuildingRequest setActiveProfileIds(List<String> activeProfileIds) {
        request.setActiveProfileIds(activeProfileIds);

        return this;
    }

    @Override
    public List<String> getInactiveProfileIds() {
        return request.getInactiveProfileIds();
    }

     * Sets the identifiers of those profiles that should be activated by explicit demand.
     *
     * @param activeProfileIds The identifiers of those profiles to activate, may be {@code null}.
     * @return This request, never {@code null}.
     */
    ModelBuildingRequest setActiveProfileIds(List<String> activeProfileIds);

    /**
     * Gets the identifiers of those profiles that should be deactivated by explicit demand.
     *