From 145a99ab0b4d38ac0b27ac48b2e08133ce494dde Mon Sep 17 00:00:00 2001
From: Ivan Dugalic <idugalic@gmail.com>
Date: Sat, 25 Jan 2025 17:10:06 +0100
Subject: [PATCH] added identifier implementation for the Sum struct

---
 src/lib.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 6890301..0c74fbe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -347,3 +347,16 @@ pub trait Identifier {
     /// Returns the identifier of the state/command/event
     fn identifier(&self) -> String;
 }
+
+impl<A, B> Identifier for Sum<A, B>
+where
+    A: Identifier,
+    B: Identifier,
+{
+    fn identifier(&self) -> String {
+        match self {
+            Sum::First(a) => a.identifier(),
+            Sum::Second(b) => b.identifier(),
+        }
+    }
+}