Method setHighlightGutterLine

src/editor.js:1185–1187

* @param {boolean} shouldHighlight

(shouldHighlight)

     * @param {boolean} shouldHighlight
     */
    setHighlightGutterLine(shouldHighlight) {
        this.setOption("highlightGutterLine", shouldHighlight);
    }

    /**
     * @returns {Boolean}