[AsyncStateMachine(FluentAssertions.Specialized.TaskCompletionSourceAssertions`1/d__4)] 
[DebuggerStepThrough()] 
public Task<AndWhichConstraint<TaskCompletionSourceAssertions<T>,T>> CompleteWithinAsync( 
   TimeSpan timeSpan, 
   string because, 
   params object[] becauseArgs 
)

Parameters

timeSpan

The allowed time span for the operation.

because

A formatted phrase as is supported by System.String.Format(System.String,System.Object[]) explaining why the assertion is needed. If the phrase does not start with the word because, it is prepended automatically.

becauseArgs

Zero or more objects to format using the placeholders in because.

Reference

TaskCompletionSourceAssertions<T> Class
TaskCompletionSourceAssertions<T> Members
System.Threading.Tasks.Task
TaskCompletionSource
System.String.Format(System.String,System.Object[])