// 0.9.4] query extensions: post-query hook
if (null != queryExtensions) {
for (IQueryExtension queryExtension: queryExtensions) {
// Don't catch any exceptions thrown here - let it bubble upwards
queryExtension.postQueryActivities(queryId, docs, rp);
}
}//TESTED (see test.QueryExtensionsTestCode)
// (Built-in version)
if (null != _builtInFederatedQueryEngine) {