code: public List<IstioResource> deployIstioResourcesFromClasspathPattern(String pattern) {
  
          final List<IstioResource> istioResources = new ArrayList<>();
          final FastClasspathScanner fastClasspathScanner = new FastClasspathScanner();
  
          fastClasspathScanner.matchFilenamePattern(pattern, (FileMatchProcessor) (relativePath, inputStream, lengthBytes) -> {
              istioResources.addAll(deployIstioResources(inputStream));
              inputStream.close();
          }).scan();
  
          return istioResources;
      }
docs: Deploys application reading resources from classpath, matching the given regular expression.
  For example istio/.*\\.json will deploy all resources ending with json placed at istio classpath directory.
  
  @param pattern to match the resources.