public EventTarget(
XNode node,
IEventFactory events,
ITraceService trace,
IInvoker invoker)
: base(node)
{
Contract.Requires <ArgumentNullException>(node != null);
Contract.Requires <ArgumentNullException>(events != null);
Contract.Requires <ArgumentNullException>(trace != null);
Contract.Requires <ArgumentNullException>(invoker != null);
this.node = node;
this.events = events;
this.trace = trace;
this.invoker = invoker;
this.state = node.AnnotationOrCreate <EventTargetState>();
}