From 47e586580ac36d37d14aa6afd07dbd820d24a64b Mon Sep 17 00:00:00 2001
From: Sean Hall <r.sean.hall@gmail.com>
Date: Mon, 19 Apr 2021 23:57:24 -0500
Subject: Use IReadOnlyCollection.

---
 src/wixext/BalBurnBackendExtension.cs | 2 +-
 src/wixext/BalExtensionFactory.cs     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/wixext/BalBurnBackendExtension.cs b/src/wixext/BalBurnBackendExtension.cs
index 6e639c1b..e8dc7a3e 100644
--- a/src/wixext/BalBurnBackendExtension.cs
+++ b/src/wixext/BalBurnBackendExtension.cs
@@ -25,7 +25,7 @@ namespace WixToolset.Bal
             BalSymbolDefinitions.WixStdbaOverridableVariable,
         };
 
-        protected override IEnumerable<IntermediateSymbolDefinition> SymbolDefinitions => BurnSymbolDefinitions;
+        protected override IReadOnlyCollection<IntermediateSymbolDefinition> SymbolDefinitions => BurnSymbolDefinitions;
 
         public override void SymbolsFinalized(IntermediateSection section)
         {
diff --git a/src/wixext/BalExtensionFactory.cs b/src/wixext/BalExtensionFactory.cs
index 30ec88c3..0bfb6c5f 100644
--- a/src/wixext/BalExtensionFactory.cs
+++ b/src/wixext/BalExtensionFactory.cs
@@ -8,7 +8,7 @@ namespace WixToolset.Bal
 
     public class BalExtensionFactory : BaseExtensionFactory
     {
-        protected override IEnumerable<Type> ExtensionTypes => new[]
+        protected override IReadOnlyCollection<Type> ExtensionTypes => new[]
         {
             typeof(BalCompiler),
             typeof(BalExtensionData),
-- 
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