l, IResolveConstraint constraint,
             string message, object[] parms )

Expect( ActualValueDelegate del, IResolveConstraint constraint )
Expect( ActualValueDelegate del, IResolveConstraint constraint,
             string message )
Expect( ActualValueDelegate del, IResolveConstraint constraint,
             string message, object[] parms )

Expect<T>( ref T actual, IResolveConstraint constraint )
Expect<T>( ref T actual, IResolveConstraint constraint,
             string message )
Expect<T>( ref T a