Method addFeatures

src/openlayers/overlay/theme/Theme.js:198–200

* @function Theme.prototype.addFeatures * @param {(Array. |Array. |Array. |ThemeFeature|GeoJSONObject|ol.Feature)} features - 待添加要素。 * @description 抽象方法，可实例化子类必须实现此方法。向专题图图层中添加数据， * 专题图仅接收 FeatureVector 类型数据， * featu

(features)

     *              feature 将储存于 features 属性中，其存储形式为数组。
     */
    addFeatures(features) { // eslint-disable-line no-unused-vars

    }

    /**
     * @function Theme.prototype.removeFeatures