From db4aa99ce0aa3e107dad1036cd777cfd646cf1a5 Mon Sep 17 00:00:00 2001
From: Ravi Khadiwala <ravi@signal.org>
Date: Fri, 19 Jan 2024 12:00:28 -0600
Subject: [PATCH] Make the ServiceIdentifier interface sealed

---
 .../textsecuregcm/identity/ServiceIdentifier.java               | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/identity/ServiceIdentifier.java b/service/src/main/java/org/whispersystems/textsecuregcm/identity/ServiceIdentifier.java
index 43c0d03b3..690b0b81b 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/identity/ServiceIdentifier.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/identity/ServiceIdentifier.java
@@ -18,7 +18,7 @@ import org.signal.libsignal.protocol.ServiceId;
     description = "A service identifier is a tuple of a UUID and identity type that identifies an account and identity within the Signal service.",
     subTypes = {AciServiceIdentifier.class, PniServiceIdentifier.class}
 )
-public interface ServiceIdentifier {
+public sealed interface ServiceIdentifier permits AciServiceIdentifier, PniServiceIdentifier {
 
   /**
    * Returns the identity type of this account identifier.