code: public String removeDuplicateDFAs(String content, AntlrOptions options) {
  		if (!options.isOptimizeCodeQuality()) {
  			return content;
  		}
  		String newContent = dfaPattern.matcher(content).replaceAll(replacement);
  		newContent = removeDuplicateFields(
  				newContent, dfaStringPattern, 1, 2, "\\bDFA\\d+_\\w+\\b", "dfa_%ds", null, null);
  		newContent = removeDuplicateFields(
  				newContent, dfaUnpackPattern, 1, 2, "\\bDFA\\d+_\\w+\\b", "dfa_%d", null, null);
  		return newContent;
  	}
docs: Remove duplicate bitset declarations to reduce the size of the static initializer but keep the bitsets
  that match the given pattern with a normalized name.