docs: public static String getTsurgeonTextFromReader(BufferedReader reader) throws IOException {
      StringBuilder sb = new StringBuilder();
      for (String thisLine; (thisLine = reader.readLine()) != null; ) {
        thisLine = removeComments(thisLine);
        if (emptyLinePattern.matcher(thisLine).matches()) {
          continue;
        }
        sb.append(thisLine);
        sb.append('\n');
      }
      return sb.toString();
    }