public static bool Is2 <T1, T2, T3, T4, T5, T6, T7, T8>(this IOrType <T1, T2, T3, T4, T5, T6, T7, T8> self, out T2 t2)
{
if (self.Possibly2() is IIsDefinately <T2> definate)
{
t2 = definate.Value;
return(true);
}
t2 = default;
return(false);
}
