From c7e7bd8a7780d1a029231cd0520a53e4fc8b9b0c Mon Sep 17 00:00:00 2001
From: PopSlime <popslime@qq.com>
Date: Wed, 1 Mar 2023 00:33:28 +0800
Subject: [PATCH] Add Identifier.Empty.

---
 Assets/Cryville/Common/Identifier.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Assets/Cryville/Common/Identifier.cs b/Assets/Cryville/Common/Identifier.cs
index bb7ce9c..4581401 100644
--- a/Assets/Cryville/Common/Identifier.cs
+++ b/Assets/Cryville/Common/Identifier.cs
@@ -2,6 +2,7 @@
 
 namespace Cryville.Common {
 	public struct Identifier : IEquatable<Identifier> {
+		public static Identifier Empty = new Identifier(0);
 		public int Key { get; private set; }
 		public object Name { get { return IdentifierManager.SharedInstance.Retrieve(Key); } }
 		public Identifier(int key) {