This interface allows callers that preserve their own execution contexts to avoid a call to ExecutionContext.Capture and ExecutionContext.Run during an await operation.

• NoThrowTaskAwaiter
• ConfiguredTaskYieldAwaiter
• TaskSchedulerAwaiter
• JoinableTaskFactory+MainThreadAwaiter
• AsyncReaderWriterLock+Awaiter
• AsyncReaderWriterResourceLock+ResourceAwaiter
• InlineResumable