code: public Date asDate(String format) throws ParsableException {
          SimpleDateFormat dateformat = new SimpleDateFormat(format);
          return asDate(dateformat);
      }
docs: Convert the parameter into a {@link Date} based on the provided <code>format</code>
  @param format
  Like "dd-MM-yy"
  @return
  Parsed <code>Date</code>
  @throws ParsableException
  If the parameter was not on the same form as <code>format</code>