readFeatureCollectionMetadataFromNode(node) {
    const result = {};
    const value = readNonNegativeIntegerString(
      node.getAttribute('numberOfFeatures'),
    );
    result['numberOfFeatures'] = value;
    return pushParseAndPop(
      /** @type {FeatureCollectionMetadata} */ (result),
      FEATURE_COLLECTION_PARSERS,
      node,
      [],
      this.gmlFormat_,
    );
  }
@param {Element} node Node.
@return {FeatureCollectionMetadata|undefined}
    FeatureCollection metadata.