2 files changed, 6 insertions, 1 deletions

diff --git a/src/WixToolset.Core/ExtensibilityServices/BackendHelper.cs b/src/WixToolset.Core/ExtensibilityServices/BackendHelper.cs
index 0e5c4b5b..0cda4437 100644
--- a/src/WixToolset.Core/ExtensibilityServices/BackendHelper.cs
+++ b/src/WixToolset.Core/ExtensibilityServices/BackendHelper.cs
@@ -36,6 +36,11 @@ namespace WixToolset.Core.ExtensibilityServices
             };
         }
 
+        public string CreateGuid(Guid namespaceGuid, string value)
+        {
+            return Uuid.NewUuid(namespaceGuid, value).ToString("B").ToUpperInvariant();
+        }
+
         private string GetValidatedFullPath(SourceLineNumber sourceLineNumbers, string path)
         {
             try
diff --git a/src/WixToolset.Core/Uuid.cs b/src/WixToolset.Core/Uuid.cs
index 0501c285..c93d134d 100644
--- a/src/WixToolset.Core/Uuid.cs
+++ b/src/WixToolset.Core/Uuid.cs
@@ -10,7 +10,7 @@ namespace WixToolset
     /// <summary>
     /// Implementation of RFC 4122 - A Universally Unique Identifier (UUID) URN Namespace.
     /// </summary>
-    public static class Uuid
+    internal static class Uuid
     {
         /// <summary>
         /// Creates a version 3 name-based UUID.