private String format(final Instant instant) {
		synchronized (formatter) {
			if (!instant.equals(lastInstant)) {
				lastInstant = instant;
				lastFormat = formatter.format(instant);
			}
			return lastFormat;
		}
	}
private String format ( final Instant instant ) { synchronized ( formatter ) { if ( ! instant . equals ( lastInstant ) ) { lastInstant = instant ; lastFormat = formatter . format ( instant ) ; } return lastFormat ; } }
Formats an {@link Instant}.

@param instant
Instant to format
@return Formatted instant