docs: public static String toConverterPreferenceValue(Iterator<String> input) {
  		final StringBuilder builder = new StringBuilder();
  		while (input.hasNext()) {
  			final String value = input.next();
  			if (builder.length() > 0) {
  				builder.append(PREFERENCE_SEPARATOR);
  			}
  			builder.append(value);
  		}
  		return builder.toString();
  	}