How to use the card.displayLargeImage function in card

reset(spec = {}) {
        this.$element = undefined;
        this._config = Object.assign({}, DEFAULT_CONFIG, spec.config);
        this.data = spec.data || {};

        const imageHeight = (this.data.summary && !this._config['card.displayLargeImage']) ?
            undefined : this.initialWidth - 10; // card margins from css TODO: move css to config object

        this.headerImage.reset({ imageUrls: this.data.imageUrl, imageHeight: imageHeight, config: this._config });
        this.readerContent.reset({ data: this.data, config: this._config });
        this.forward(this.readerContent);

        this.isExpanded = false;
        this.isFlipped = this._config['card.displayBackCardByDefault'];
        return this;
    }