public static string Good5(DerivedStringer x, IFormatProvider p)
{
if (x == null)
throw new ArgumentNullException("x");
if (p == null)
throw new ArgumentNullException("p");
return x.ToString("{0}", p);
}
// D1007/UseBaseTypes
// G1003/FormatProvider
public static string Bad5(DerivedStringer x)
{
if (x == null)
throw new ArgumentNullException("x");
return x.ToString();
}