code: public static PrintFields parse(final String printFields) {
          Validate.notNull(printFields, "PrintFields must not be null");
  
          final Set<String> printFieldsSet = new LinkedHashSet<String>(Arrays.asList(SEPARATORS.split(printFields)));
          printFieldsSet.remove("");
  
          return new PrintFields(printFieldsSet);
      }
docs: Parser for a printfields string.
  
  @param printFields A valid IDOL printfields
  @return A parsed {@code PrintFields}