Replace Item Now returns a Optional container instance of the updated Item

src/main/java/org/opengroup/osdu/azure/cosmosdb/CosmosStore.java

@@ -186,8 +186,9 @@ public class CosmosStore {
      * @param partitionKey    Partition key of item
      * @param item            Data object to store
      * @param <T>             Type of item
+     * @return The replaced item
      */
-    public <T> void replaceItem(
+    public <T> Optional<T> replaceItem(
             final String dataPartitionId,
             final String cosmosDBName,
             final String collection,
@@ -198,7 +199,8 @@ public class CosmosStore {
             CosmosContainer cosmosContainer = getCosmosContainer(dataPartitionId, cosmosDBName, collection);
             PartitionKey key = new PartitionKey(partitionKey);
             CosmosItemRequestOptions options = new CosmosItemRequestOptions();
-            cosmosContainer.replaceItem(item, id, key, options);
+            T updateItem = cosmosContainer.replaceItem(item, id, key, options).getItem();
+            return Optional.ofNullable((T) updateItem);
         } catch (NotFoundException e) {
             String errorMessage = "Item was unexpectedly not found";
             LOGGER.warn(errorMessage, e);