Returns data from the event.
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
represents the class used when the event is raised. This gives access to the headers in the response, in addition to informing the application that the invitation has been accepted. The headers exposed in this event are the same as the one returned when the application calls the methods to fetch headers. If the application registers for this event, it is responsible for sending the acknowledgement in a timely manner. If the application does not send ACK, the platform sends it when the application returns from this event. If an application chooses to send the ACK later, it should set the property to true. is false by default.