|TestKitBaseWithin Method (TimeSpan, Action, NullableTimeSpan)|
`within` blocks may be nested. All methods in this class which take maximum wait times are available in a version which implicitly uses the remaining time governed by the innermost enclosing `within` block.
public void Within( TimeSpan max, Action action, Nullable<TimeSpan> epsilonValue = null )
member Within : max : TimeSpan * action : Action * ?epsilonValue : Nullable<TimeSpan> (* Defaults: let _epsilonValue = defaultArg epsilonValue null *) -> unit