This interface must be implemented and then registred as the
handler of a PreserveAspectRatioParser instance
in order to be notified of parsing events.
This class implements an event-based parser for semicolon separated
length pair lists, as used in the 'values' attribute of the 'animateMotion'
element.
This interface must be implemented and then registred as the
handler of a PreserveAspectRatioParser instance in order to
be notified of parsing events.