Resources: support api version when listing generic resources

Tests/Fluent.Tests/ResourceManager/GenericResourcesTests.cs

@@ -139,13 +139,15 @@ public async Task CanCRUDWithProviderApiVersion()
                                  where string.Equals(r.Name, resourceName, StringComparison.OrdinalIgnoreCase)
                                  select r).FirstOrDefault();
                     Assert.NotNull(found);
+                    Assert.NotNull(found.ApiVersion);
 
                     // Get
                     resource = genericResources.Get(rgName,
                         resource.ResourceProviderNamespace,
                         resource.ParentResourceId,
                         resource.ResourceType,
                         resource.Name);
+                    Assert.NotNull(resource.ApiVersion);
 
                     // Move
                     IResourceGroup newGroup = resourceManager

src/ResourceManagement/ResourceManager/GenericResource/GenericResourceImpl.cs

@@ -60,6 +60,10 @@ public string ApiVersion
         {
             get
             {
+                if (string.IsNullOrEmpty(apiVersion))
+                {
+                    apiVersion = GenericResourcesImpl.GetApiVersion(Id, Manager);
+                }
                 return apiVersion;
             }
         }

src/ResourceManagement/ResourceManager/GenericResource/GenericResourcesImpl.cs

@@ -144,18 +144,7 @@ await DeleteAsync(
                     resourceType,
                     resourceName,
                     apiVersion);
-            GenericResourceImpl resource = new GenericResourceImpl(
-                    resourceName,
-                    inner,
-                    Manager)
-            {
-                resourceProviderNamespace = resourceProviderNamespace,
-                parentResourceId = parentResourcePath,
-                resourceType = resourceType,
-                apiVersion = apiVersion
-            };
-
-            return resource;
+            return WrapModelWithApiVersion(inner, apiVersion);
         }
 
         public IGenericResource GetById(string id, string apiVersion = default(string))
@@ -169,14 +158,8 @@ await DeleteAsync(
             {
                 apiVersion = await GetApiVersionAsync(id, Manager, cancellationToken);
             }
-            return await GetAsync(
-                ResourceUtils.GroupFromResourceId(id),
-                ResourceUtils.ResourceProviderFromResourceId(id),
-                ResourceUtils.ParentResourcePathFromResourceId(id),
-                ResourceUtils.ResourceTypeFromResourceId(id),
-                ResourceUtils.NameFromResourceId(id),
-                apiVersion,
-                cancellationToken);
+            var inner = await Inner.GetByIdAsync(id, apiVersion, cancellationToken);
+            return WrapModelWithApiVersion(inner, apiVersion);
         }
 
         protected override Task<GenericResourceInner> GetInnerByGroupAsync(string groupName, string name, CancellationToken cancellation)
@@ -292,5 +275,29 @@ internal static async Task<string> GetApiVersionAsync(string id, IResourceManage
             }
             return await Task.FromResult(apiVersionValue);
         }
+
+        internal static string GetApiVersion(string id, IResourceManager resourceManager)
+        {
+            return Extensions.Synchronize(() => GetApiVersionAsync(id, resourceManager, CancellationToken.None));
+        }
+
+        protected IGenericResource WrapModelWithApiVersion(GenericResourceInner inner, string apiVersion)
+        {
+            if (inner == null)
+            {
+                return null;
+            }
+            GenericResourceImpl resource = new GenericResourceImpl(
+                    inner.Name,
+                    inner,
+                    Manager)
+            {
+                resourceProviderNamespace = ResourceUtils.ResourceProviderFromResourceId(inner.Id),
+                parentResourceId = ResourceUtils.ParentResourcePathFromResourceId(inner.Id),
+                resourceType = ResourceUtils.ResourceTypeFromResourceId(inner.Id),
+                apiVersion = apiVersion
+            };
+            return resource;
+        }
     }
 }