docs: public static boolean isAbsolutePath (final String path) {
          if (path == null || path.trim().length() == 0) {
              return false;
          }
  
          if (File.separator.equals(UNIX_SEPARATOR)) {
              return path.startsWith(UNIX_SEPARATOR);
          } else
  
          if (File.separator.equals(WINDOWS_SEPARATOR) && path.length() > 2) {
              return path.matches("([a-zA-Z]:|\\\\)\\\\.*");
          }
  
          return false;
      }