@Override
	public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition)
	{
		final String value = ISO8601Utils.format(date, true);
		toAppendTo.append(value);
		return toAppendTo;
	}
Improved version of the {@link ISO8601DateFormat} that also serializes milliseconds.

@author Gunnar Hillert
spring-xd-rest-domain/src/main/java/org/springframework/xd/rest/domain/util/ISO8601DateFormatWithMilliSeconds.java