async clearAllAsync() {
        this.clearLocalValues();
        await XH.fetchJson({
            url: 'xh/clearPrefs',
            params: {clientUsername: XH.getUsername()}
        });
        return this.loadPrefsAsync();
    }
/**
     * Reset *all* preferences, reverting their effective values back to defaults.
     * @returns {Promise} - resolves when preferences have been cleared and defaults reloaded.
     */
Reset *all* preferences, reverting their effective values back to defaults.
@returns {Promise} - resolves when preferences have been cleared and defaults reloaded.
Reset * all * preferences reverting their effective values back to defaults . @returns { Promise } - resolves when preferences have been cleared and defaults reloaded .
async clearAllAsync() {
        this.clearLocalValues();
        await XH.fetchJson({
            url: 'xh/clearPrefs',
            params: {clientUsername: XH.getUsername()}
        });
        return this.loadPrefsAsync();
    }
async clearAllAsync ( ) { this . clearLocalValues ( ) ; await XH . fetchJson ( { url : 'xh/clearPrefs' , params : { clientUsername : XH . getUsername ( ) } } ) ; return this . loadPrefsAsync ( ) ; }
Reset *all* preferences, reverting their effective values back to defaults.
Reset * all * preferences reverting their effective values back to defaults .