Gets the current destination surface for the context.
This is either the original target surface as passed to
the Context constructor or the target surface for the current
group as started by the most recent call to
Context.pushGroup() or Context.pushGroup(Content).
Gets the current destination surface for the context. This is either the original target surface as passed to the Context constructor or the target surface for the current group as started by the most recent call to Context.pushGroup() or Context.pushGroup(Content).