Spending/Upgrades/Duration/IUpgradeableDuration.cs
namespace PlanetMeat;

public interface IUpgradeableDuration
{
	public ValueAggregator<float> AggregateDurationMult { get; }
}

public static partial class Extensions
{
	public static float GetDurationMult( this IUpgradeableDuration d ) => d.AggregateDurationMult.Total;
}