get coordinate() {
    if (!this.coordinate_) {
      this.coordinate_ = this.map.getCoordinateFromPixel(this.pixel);
    }
    return this.coordinate_;
  }
The coordinate corresponding to the original browser event.  This will be in the user
projection if one is set.  Otherwise it will be in the view projection.
@type {import("./coordinate.js").Coordinate}
@api