Method Max<TKey, TProps, TValue>(IRedbGrouping<TKey, TProps>, Expression<Func<TProps, TValue>>)

Maximum in a group: Agg.Max(g, x => x.Price)

public static TValue Max<TKey, TProps, TValue>(IRedbGrouping<TKey, TProps> group, Expression<Func<TProps, TValue>> selector) where TProps : class, new()