public static TryOptionAsync <Func <T2, Func <T3, R> > > parmap <T1, T2, T3, R>(TryOptionAsync <T1> self, Func <T1, T2, T3, R> func) => self.ParMap(func);
public static TryOptionAsync <Func <T2, Func <T3, R> > > parmap <T1, T2, T3, R>(TryOptionAsync <T1> self, Func <T1, T2, T3, R> func) => self.ParMap(func);