BarotraumaClient/ClientSource/Upgrades/UpgradePrefab.cs

using System.Collections.Immutable;
 
namespace Barotrauma
{
    sealed partial class UpgradePrefab
    {
        public readonly ImmutableArray<DecorativeSprite> DecorativeSprites = new ImmutableArray<DecorativeSprite>();
        public Sprite Sprite { get; private set; }
    }
}