getGeometry() {
    return /** @type {Geometry|undefined} */ (this.get(this.geometryName_));
  }
Get the feature's default geometry.  A feature may have any number of named
geometries.  The "default" geometry (the one that is rendered by default) is
set when calling {@link module:ol/Feature~Feature#setGeometry}.
@return {Geometry|undefined} The default geometry for the feature.
@api
@observable