diff --git a/src/Microsoft.OData.Edm/ExtensionMethods/ExtensionMethods.cs b/src/Microsoft.OData.Edm/ExtensionMethods/ExtensionMethods.cs
index e2fde78b99..812b79ba7b 100644
--- a/src/Microsoft.OData.Edm/ExtensionMethods/ExtensionMethods.cs
+++ b/src/Microsoft.OData.Edm/ExtensionMethods/ExtensionMethods.cs
@@ -2027,6 +2027,18 @@ public static void AddAlternateKeyAnnotation(this EdmModel model, IEdmEntityType
             model.SetVocabularyAnnotation(annotation);
         }
 
+        /// <summary>
+        /// Adds a vocabulary annotation to this model.
+        /// </summary>
+        /// <param name="model">The model the annotation is added to.</param>
+        /// <param name="annotation">The annotation to be added.</param>
+        /// <param name="location">The location to add the allocation</param>
+        public static void AddVocabularyAnnotation(this EdmModel model, IEdmVocabularyAnnotation annotation, Csdl.EdmVocabularyAnnotationSerializationLocation location)
+        {
+            model.AddVocabularyAnnotation(annotation);
+            annotation.SetSerializationLocation(model, location);
+        }
+
         /// <summary>
         /// Checks whether the given entity type has the <paramref name="property"/> as one of the key properties.
         /// </summary>