getLayer(feature) {
    return /** @type {import('../layer/Vector.js').default} */ (
      this.featureLayerAssociation_[getUid(feature)]
    );
  }
Returns the associated {@link module:ol/layer/Vector~VectorLayer vector layer} of
a selected feature.
@param {import("../Feature.js").default} feature Feature
@return {import('../layer/Vector.js').default} Layer.
@api