docs: private static List<File> findFilesInDirectory(File directory,
  			Pattern pattern, boolean scanRecursive) {
  		List<File> files = new ArrayList<File>();
  		String[] filesInDirectory = directory.list();
  		if (filesInDirectory == null) {
  			return files;
  		}
  		for (String fileToCheck : filesInDirectory) {
  			File file = new File(directory, fileToCheck);
  			if (file.isFile()) {
  				if (pattern.matcher(fileToCheck).matches()) {
  					files.add(file);
  				}
  			} else if (file.isDirectory()) {
  				if (scanRecursive) {
  					files.addAll(findFilesInDirectory(file, pattern,
  							scanRecursive));
  				}
  			}
  		}
  		return files;
  	}