UnityRoyale-Public/Packages/com.unity.shadergraph@5.13.0/Editor/Data/SubGraph/SubGraphAsset.cs

using System;
using System.Collections.Generic;
using UnityEditor.Experimental.AssetImporters;
using UnityEditor.Graphing;
using UnityEngine;

namespace UnityEditor.ShaderGraph
{
    class SubGraphAsset : ScriptableObject
    {
        public long importedAt;
    }
}