return new ActivationSettings(true, true, true);
    }

    static ActivationSettings deactivated() {
        return new ActivationSettings(false, false, false);
    }

    static ActivationSettings deactivatedOpt() {
        return new ActivationSettings(false, true, false);
    }

     * Mark a profile as optional and deactivated.
     * @param id The identifier of the profile.
     */
    public void deactivateOptionalProfile(String id) {
        this.activations.put(id, ActivationSettings.deactivatedOpt());
    }

    /**
     * Adds a profile activation to the request.
     * @param id The identifier of the profile.
     * @param active Should the profile be activated?

     * @param selector The selector of the project.
     */
    public void deactivateOptionalProject(String selector) {
        this.activations.add(new ProjectActivationSettings(selector, ActivationSettings.deactivatedOpt()));
    }

    public boolean isEmpty() {
        return this.activations.isEmpty();
    }