setMouseAnchor(useAnchor) {
    this.useAnchor_ = useAnchor;
    if (!useAnchor) {
      this.lastAnchor_ = null;
    }
  }
Enable or disable using the mouse's location as an anchor when zooming
@param {boolean} useAnchor true to zoom to the mouse's location, false
to zoom to the center of the map
@api