docs: public static String subPath(String dirPath, String filePath) {
  		if (StrUtil.isNotEmpty(dirPath) && StrUtil.isNotEmpty(filePath)) {
  
  			dirPath = StrUtil.removeSuffix(normalize(dirPath), "/");
  			filePath = normalize(filePath);
  
  			final String result = StrUtil.removePrefixIgnoreCase(filePath, dirPath);
  			return StrUtil.removePrefix(result, "/");
  		}
  		return filePath;
  	}