code: public static String removeQuotes(String s) {
          if (s == null) return null;
  
          s = s.trim();
          if (s.startsWith("\"")) s = s.substring(1);
          if (s.endsWith("\"")) s = s.substring(0, s.length() - 1);
  
          return s;
      }
docs: Removes any surrounding quotes from the specified string and returns a
  new string.
  
  @param s
  The string to check for surrounding quotes.
  
  @return A new string created from the specified string, minus any
  surrounding quotes.