mixedreality/com.microsoft.mixedreality.toolkit.foundation/Core/Definitions/Utilities/SceneAssetReferenceAttribute.cs

using System;
using UnityEngine;

namespace Microsoft.MixedReality.Toolkit
{
    /// <summary>
    /// Attribute for using a SceneAssetReference property drawer.
    /// </summary>
    [AttributeUsage(AttributeTargets.Field, AllowMultiple = false)]
    public class SceneAssetReferenceAttribute : PropertyAttribute { }
}