getConfig() {
        if (!isNode(this.element) && !this.element.hasOwnProperty('draggable')) {
            this.element.draggable = this.instance.settings.draggable;
        }

        const parser = new SlideConfigParser(this.instance.settings.slideExtraAttributes);
        this.slideConfig = parser.parseConfig(this.element, this.instance.settings);

        return this.slideConfig;
    }
Get slide config
returns each individual slide config
it uses SlideConfigParser
each slide can overwrite a global setting
read more in the SlideConfigParser class

@return { object }