this.globalSettingsFile = globalSettingsFile;

        return this;
    }

    @Override
    public SettingsSource getGlobalSettingsSource() {
        return globalSettingsSource;
    }

    @Override
    public DefaultSettingsBuildingRequest setGlobalSettingsSource(SettingsSource globalSettingsSource) {

                                return null;
                            }))
                    .installationSettingsSource(
                            toSource(request.getGlobalSettingsFile(), request.getGlobalSettingsSource()))
                    .projectSettingsSource(
                            toSource(request.getProjectSettingsFile(), request.getProjectSettingsSource()))

    /**
     * Gets the global settings source.
     *
     * @return The global settings source or {@code null} if none.
     */
    SettingsSource getGlobalSettingsSource();

    /**
     * Sets the global settings source. If both user settings and a global settings are given, the user settings take
     * precedence.
     *