Method _addStyleElement

src/map-extent.js:317–321

(mapStyle)

      });
    };
    const _addStyleElement = (mapStyle) => {
      this.whenReady().then(() => {
        this._extentLayer.renderStyles(mapStyle);
      });
    };
    for (let i = 0; i < elementsGroup.length; ++i) {
      let element = elementsGroup[i];
      switch (element.nodeName) {