public static IEnumerable <IEquipmentBuilder> Flasks(this IEquipmentBuilderCollection @this)
 => ItemSlotExtensions.Flasks.Select(s => @this[s]);
 public static IConditionBuilder IsAnyFlaskActive(this IEquipmentBuilderCollection @this)
 => ItemSlotExtensions.Flasks.Select(s => @this[s].HasItem).Aggregate((l, r) => l.Or(r));
 public static IConditionBuilder IsAnyFlaskActive(this IEquipmentBuilderCollection @this)
 => @this.Flasks().Select(s => s.HasItem).Aggregate((l, r) => l.Or(r));