pub trait AFn10<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9>: AFnMut10<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> + Fn(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9) -> Self::Ret { }