- /** @type {{options: Object}} @private */
- this.xAxis_ = {options: {}};
- /** @type {Object} @private */
+
+ /**
+ * Contains x-axis specific options, which are stored in the options key.
+ * This matches the yAxes_ object structure (by being a dictionary with an
+ * options element) allowing for shared code.
+ * @type {options: Object} @private
+ */
+ this.xAxis_ = {};