/**
     * Gets the project settings source.
     *
     * @return the project settings source or {@code null} if none
     */
    @Nonnull
    Optional<Source> getProjectSettingsSource();

    /**
     * Gets the user settings source.
     *
     * @return the user settings source or {@code null} if none
     */
    @Nonnull
    Optional<Source> getUserSettingsSource();

    /**

        this.projectSettingsFile = projectSettingsFile;

        return this;
    }

    @Override
    public SettingsSource getProjectSettingsSource() {
        return projectSettingsSource;
    }

    @Override
    public DefaultSettingsBuildingRequest setProjectSettingsSource(SettingsSource projectSettingsSource) {

                            toSource(request.getGlobalSettingsFile(), request.getGlobalSettingsSource()))
                    .projectSettingsSource(
                            toSource(request.getProjectSettingsFile(), request.getProjectSettingsSource()))
                    .userSettingsSource(toSource(request.getUserSettingsFile(), request.getUserSettingsSource()))
                    .build());

            return new DefaultSettingsBuildingResult(

    /**
     * Gets the project settings source.
     *
     * @return The project settings source or {@code null} if none.
     * @since 4.0.0
     */
    SettingsSource getProjectSettingsSource();

    /**
     * Sets the project settings source.
     *
     * @param projectSettingsSource The project settings source, may be {@code null} to disable global settings.