code: List<File> getFiles() {
          List<File> list = new ArrayList<File>();
          for (String sDirectory : config.getDirectories()) {
              if (sDirectory != null) {
                  File directory = getDirectory(sDirectory);
                  File[] aFiles = directory.listFiles(config.getFilenameFilter());
                  if (aFiles != null) {
                      list.addAll(Arrays.asList(aFiles));
                  }
              }
          }
          return list;
      }
docs: Returns a List<File> of all Files from all polled directories
  
  @return