stas-barecky/Library/PackageCache/com.unity.shadergraph@3cfe1d1f3f8c/Editor/Data/Nodes/GuidEncoder.cs

using System;

namespace UnityEditor.ShaderGraph
{
    static class GuidEncoder
    {
        public static string Encode(Guid guid)
        {
            string enc = Convert.ToBase64String(guid.ToByteArray());
            return String.Format("{0:X}", enc.GetHashCode());
        }
    }
}