code: @Trivial
      private List<String> processInMemoryMappingFiles(List<InMemoryMappingFile> immfs) {
          List<String> res = new ArrayList<String>();
          for (InMemoryMappingFile immf : immfs) {
              // Register the file with our ClassLoader
              URL url = _appLoader.registerInMemoryResource(immf);
              // Register the <URL -> File> mapping with the handler so it can return a stream
              // when requested to do so.
              _inMemHandler.register(url, immf);
              // Save a reference to the URL so we can cleanup later.
              _inMemoryMappingFileURLs.add(url);
              res.add(immf.getName());
          }
  
          return res;
      }
docs: Registers all mapping files with : ResourceResolver and InMemoryURLStreamHandler
  
  Returns a List containing the names of all InMemoryMappingFiles.