Prefer IReadOnlyCollection<> or IReadOnlyList<> over IEnumerable<>

Closes wixtoolset/issues#6422

2 files changed, 3 insertions, 3 deletions

diff --git a/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs b/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs
index 37fc17f9..d8062008 100644
--- a/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs
+++ b/src/WixToolset.Core.Burn/Bind/BindBundleCommand.cs
@@ -73,9 +73,9 @@ namespace WixToolset.Core.Burn
 
         private IVariableResolver VariableResolver { get; }
 
-        public IEnumerable<IFileTransfer> FileTransfers { get; private set; }
+        public IReadOnlyCollection<IFileTransfer> FileTransfers { get; private set; }
 
-        public IEnumerable<ITrackedFile> TrackedFiles { get; private set; }
+        public IReadOnlyCollection<ITrackedFile> TrackedFiles { get; private set; }
 
         public WixOutput Wixout { get; private set; }
 
diff --git a/src/WixToolset.Core.Burn/ExtensibilityServices/BurnBackendHelper.cs b/src/WixToolset.Core.Burn/ExtensibilityServices/BurnBackendHelper.cs
index a4f37d10..e4d2b0c9 100644
--- a/src/WixToolset.Core.Burn/ExtensibilityServices/BurnBackendHelper.cs
+++ b/src/WixToolset.Core.Burn/ExtensibilityServices/BurnBackendHelper.cs
@@ -46,7 +46,7 @@ namespace WixToolset.Core.Burn.ExtensibilityServices
 
         public IResolvedDirectory CreateResolvedDirectory(string directoryParent, string name) => this.backendHelper.CreateResolvedDirectory(directoryParent, name);
 
-        public IEnumerable<ITrackedFile> ExtractEmbeddedFiles(IEnumerable<IExpectedExtractFile> embeddedFiles) => this.backendHelper.ExtractEmbeddedFiles(embeddedFiles);
+        public IReadOnlyList<ITrackedFile> ExtractEmbeddedFiles(IEnumerable<IExpectedExtractFile> embeddedFiles) => this.backendHelper.ExtractEmbeddedFiles(embeddedFiles);
 
         public string GenerateIdentifier(string prefix, params string[] args) => this.backendHelper.GenerateIdentifier(prefix, args);