code: @Nonnull
    @Nonempty
    public static String getQuotedStringValue (@Nonnull final String sValue)
    {
      ValueEnforcer.notNull (sValue, "Value");
      if (sValue.length () == 0)
        return "\"\"";
      return '"' + StringHelper.replaceAll (sValue, "\"", "\\\"") + '"';
    }
docs: Get a quoted string value. Every double quote (") is replaced to a
  backslash and a double quote (\").
  
  @param sValue
  The source value. May not be <code>null</code>.
  @return An opening double quote + the quoted string + a closing double
  quote
  @since 6.1.2