get options() {
        return {
            applicationUpdateURL:         this._get('--update-url') || this._get('-u'),
            applicationStartupURL:        this._get('--startup-url'),
            applicationCacheDirectory:    this._get('--cache-directory') || this._get('-c'),
            applicationUserDataDirectory: this._get('--user-directory')
        };
    }
Extract <Configuration> compatible options from the arguments provided through the commandline