/// <summary>
/// Call this method in a lamba expression to state that an argument to a method being mocked should not be null.
/// </summary>
/// <remarks>
/// Note that ConvertibleConstraintWrapper is implicitly convertible to T, unless T is an interface. In that case,
/// Convert() must be called on the return object.
/// </remarks>
/// <typeparam name="T">
/// The type of the return value
/// </typeparam>
public static ConvertibleConstraintWrapper <T> NotNull <T>() where T : class
{
return(new ConvertibleConstraintWrapper <T>(MockConstraint.IsNotNull <T>()));
}
