docs: public static ClassicCounter<String> valueOfIgnoreComments(String s) {
        ClassicCounter<String> result = new ClassicCounter<String>();
        String[] lines = s.split("\n");
        for (String line : lines) {
          String[] fields = line.split("\t");
          if (fields.length != 2) {
            if (line.startsWith("#")) {
              continue;
            } else {
              throw new RuntimeException("Got unsplittable line: \"" + line + '\"');
            }
          }
          result.setCount(fields[0], Double.parseDouble(fields[1]));
        }
        return result;
      }