Returning `+Nothing+` from a non-`+async+` `+Task+`/`+Task(Of T)+` method will cause a `+NullReferenceException+` at runtime. This problem can be avoided by returning `+Task.FromResult(Of T)(Nothing)+` instead.
== Noncompliant Code Example
----
Public Function GetFooAsync() As Task(Of Object)
Return Nothing
End Function
== Compliant Solution
Return Task.FromResult(Of Object)(Nothing)
