docs: public static void printQuotedSymbol(Appendable out, CharSequence text)
          throws IOException
      {
          if (text == null)
          {
              out.append("null.symbol");
          }
          else
          {
              out.append('\'');
              printCodePoints(out, text, EscapeMode.ION_SYMBOL);
              out.append('\'');
          }
      }