docs: public static void printLongString(Appendable out, CharSequence text)
          throws IOException
      {
          if (text == null)
          {
              out.append("null.string");
          }
          else
          {
              out.append("'''");
              printCodePoints(out, text, EscapeMode.ION_LONG_STRING);
              out.append("'''");
          }
      }