'Declaration
<AsyncStateMachineAttribute(C1.WPF.Core.AsyncEventArgsDeferralsAwaiter/d__5)> Public Function WaitDeferralsAsync() As Task
[AsyncStateMachine(C1.WPF.Core.AsyncEventArgsDeferralsAwaiter/d__5)] public Task WaitDeferralsAsync()
'Declaration
<AsyncStateMachineAttribute(C1.WPF.Core.AsyncEventArgsDeferralsAwaiter/d__5)> Public Function WaitDeferralsAsync() As Task
[AsyncStateMachine(C1.WPF.Core.AsyncEventArgsDeferralsAwaiter/d__5)] public Task WaitDeferralsAsync()