public void setDateFormatAsString(String dateFormatAsString) {
		if (StringUtils.hasText(dateFormatAsString)) {
			super.setDateFormat(new SimpleDateFormat(dateFormatAsString));
		}
	}
Allows for setting the {@link DateFormat} using a {@link String}. If not
set, the default {@link DateFormat} used will be {@link TimeUtils#getDefaultDateFormat()}.

@param dateFormatAsString Will be ignored if null or empty.
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/plugins/job/ExpandedJobParametersConverter.java