ClassicAssert.IsNotInstanceOf
ClassicAssert.IsNotInstanceOf succeeds if the object provided as an actual value is not an instance of the expected type.
ClassicAssert.IsNotInstanceOf(Type expected, object actual);
ClassicAssert.IsNotInstanceOf(Type expected, object actual,
string message, params object[] params);
ClassicAssert.IsNotInstanceOf<T>(object actual);
ClassicAssert.IsNotInstanceOf<T>(object actual,
string message, params object[] params);