code: private void _suffixmatch() throws
        IOException
    {
      if (debug)
      {
        checkState(reader.curChar == '$');
      }
      builder.type = Type.SUFFIXMATCH;
      builder.append("$=");
      reader.next();
      if (debug)
      {
        checkState(reader.curChar == '=');
      }
    }
docs: SUFFIXMATCH $=