Change optional Guid name to Guid? (#14827)

* Fix Key Vault Administration README

* Change optional Guid name to Guid?

Fixes #14823

sdk/keyvault/Azure.Security.KeyVault.Administration/api/Azure.Security.KeyVault.Administration.netstandard2.0.cs

@@ -21,8 +21,8 @@ protected KeyVaultAccessControlClient() { }
         public KeyVaultAccessControlClient(System.Uri vaultUri, Azure.Core.TokenCredential credential) { }
         public KeyVaultAccessControlClient(System.Uri vaultUri, Azure.Core.TokenCredential credential, Azure.Security.KeyVault.Administration.KeyVaultAccessControlClientOptions options) { }
         public virtual System.Uri VaultUri { get { throw null; } }
-        public virtual Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment> CreateRoleAssignment(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignmentProperties properties, System.Guid name = default(System.Guid), System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
-        public virtual System.Threading.Tasks.Task<Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment>> CreateRoleAssignmentAsync(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignmentProperties properties, System.Guid name = default(System.Guid), System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public virtual Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment> CreateRoleAssignment(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignmentProperties properties, System.Guid? name = default(System.Guid?), System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public virtual System.Threading.Tasks.Task<Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment>> CreateRoleAssignmentAsync(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignmentProperties properties, System.Guid? name = default(System.Guid?), System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment> DeleteRoleAssignment(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, string roleAssignmentName, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment>> DeleteRoleAssignmentAsync(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, string roleAssignmentName, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual Azure.Response<Azure.Security.KeyVault.Administration.Models.KeyVaultRoleAssignment> GetRoleAssignment(Azure.Security.KeyVault.Administration.KeyVaultRoleScope roleScope, string roleAssignmentName, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }

sdk/keyvault/Azure.Security.KeyVault.Administration/samples/README.md

@@ -12,6 +12,6 @@ description: Samples for the Azure.Security.KeyVault.Administration client libra
 # Azure.Security.KeyVault.Administration Samples
 
 - Creating, getting, and deleting role assignments [synchronously](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_RbacHelloWorldSync.md) or [asynchronously](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_RbacHelloWorldAsync.md)
-- [Assigning roles for specific scopes](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample2_RbacScopeAssignment.md) 
+- [Assigning roles for specific scopes](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample2_RbacScopeAssignment.md)
 - Performing a full key backup and restore [synchronously](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_BackupHelloWorldSync.md) and [asynchronously](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_BackupHelloWorldAsync.md)
 - [Performing selective key restore]

sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_BackupHelloWorldAsync.md

@@ -1,7 +1,7 @@
 # Performing a full key backup and restore (Async)
 
 This sample demonstrates how to a perform full key backup and restore in Azure Key Vault.
-To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions.
+To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions.
 
 ## Creating a KeyVaultBackupClient
 

sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_BackupHelloWorldSync.md

@@ -1,7 +1,7 @@
 # Performing a full key backup and restore (Sync)
 
 This sample demonstrates how to perform a full key backup and restore in Azure Key Vault.
-To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions.
+To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions.
 
 ## Creating a KeyVaultBackupClient
 

sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_RbacHelloWorldAsync.md

@@ -1,7 +1,7 @@
 # Creating, getting, and deleting role assignments (Async)
 
 This sample demonstrates how to create, get, and delete role assignments in Azure Key Vault.
-To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions.
+To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions.
 
 ## Creating a KeyVaultAccessControlClient
 
@@ -44,7 +44,7 @@ Now let's assign a role to a service principal. To do this we'll need a role def
 
 A role definition Id can be obtained from the `Id` property of one of the role definitions returned from `GetRoleAssignments`.
 
-See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions on how to generate a new service principal and obtain it's object Id.
+See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions on how to generate a new service principal and obtain it's object Id.
 You can also get the object Id for your currently signed in account by running the following [Azure CLI][azure_cli] command.
 ```
 az ad signed-in-user show --query objectId

sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample1_RbacHelloWorldSync.md

@@ -1,7 +1,7 @@
 # Creating, getting, and deleting role assignments (Sync)
 
 This sample demonstrates how to create, get, and delete role assignments in Azure Key Vault.
-To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions.
+To get started, you'll need a URI to an Azure Key Vault. See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions.
 
 ## Creating a KeyVaultAccessControlClient
 
@@ -36,7 +36,7 @@ Now let's assign a role to a service principal. To do this we'll need a role def
 
 A role definition Id can be obtained from the `Id` property of one of the role definitions returned from `GetRoleAssignments`.
 
-See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions on how to generate a new service principal and obtain it's object Id.
+See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions on how to generate a new service principal and obtain it's object Id.
 You can also get the object Id for your currently signed in account by running the following [Azure CLI][azure_cli] command.
 ```
 az ad signed-in-user show --query objectId

sdk/keyvault/Azure.Security.KeyVault.Administration/samples/Sample2_RbacScopeAssignment.md

@@ -7,7 +7,7 @@ For information about interacting with a `KeyVaultKey` with a `KeyClient`, see t
 
 Let's assign a role to a service principal so that it applies to all keys. To do this we'll need a service principal object Id and a role definition Id.
 
-See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/readme.md) for links and instructions on how to generate a new service principal and obtain it's object Id.
+See the [README](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/keyvault/Azure.Security.KeyVault.Administration/README.md) for links and instructions on how to generate a new service principal and obtain it's object Id.
 You can also get the object Id for your currently signed in account by running the following [Azure CLI][azure_cli] command.
 ```
 az ad signed-in-user show --query objectId

sdk/keyvault/Azure.Security.KeyVault.Administration/src/KeyVaultAccessControlClient.cs

@@ -239,17 +239,17 @@ public virtual AsyncPageable<KeyVaultRoleAssignment> GetRoleAssignmentsAsync(Key
         /// </summary>
         /// <param name="roleScope"> The scope of the role assignment to create. </param>
         /// <param name="properties"> Properties for the role assignment. </param>
-        /// <param name="name">The Name used to create the role assignment.</param>
+        /// <param name="name">Optional name used to create the role assignment. A new <see cref="Guid"/> will be generated if not specified.</param>
         /// <param name="cancellationToken"> The cancellation token to use. </param>
         /// <exception cref="RequestFailedException">The server returned an error. See <see cref="Exception.Message"/> for details returned from the server.</exception>
         /// <exception cref="ArgumentNullException"><paramref name="roleScope"/> or <paramref name="properties"/> is null.</exception>
-        public virtual Response<KeyVaultRoleAssignment> CreateRoleAssignment(KeyVaultRoleScope roleScope, KeyVaultRoleAssignmentProperties properties, Guid name = default, CancellationToken cancellationToken = default)
+        public virtual Response<KeyVaultRoleAssignment> CreateRoleAssignment(KeyVaultRoleScope roleScope, KeyVaultRoleAssignmentProperties properties, Guid? name = null, CancellationToken cancellationToken = default)
         {
             using DiagnosticScope scope = _diagnostics.CreateScope($"{nameof(KeyVaultAccessControlClient)}.{nameof(CreateRoleAssignment)}");
             scope.Start();
             try
             {
-                var _name = name == default ? Guid.NewGuid().ToString() : name.ToString();
+                var _name = (name ?? Guid.NewGuid()).ToString();
                 return _assignmentsRestClient.Create(VaultUri.AbsoluteUri, roleScope.ToString(), _name, new RoleAssignmentCreateParameters(properties), cancellationToken);
             }
             catch (Exception ex)
@@ -264,17 +264,17 @@ public virtual Response<KeyVaultRoleAssignment> CreateRoleAssignment(KeyVaultRol
         /// </summary>
         /// <param name="roleScope"> The scope of the role assignment to create. </param>
         /// <param name="properties"> Properties for the role assignment. </param>
-        /// <param name="name">The name used to create the role assignment.</param>
+        /// <param name="name">Optional name used to create the role assignment. A new <see cref="Guid"/> will be generated if not specified.</param>
         /// <param name="cancellationToken"> The cancellation token to use. </param>
         /// <exception cref="RequestFailedException">The server returned an error. See <see cref="Exception.Message"/> for details returned from the server.</exception>
         /// <exception cref="ArgumentNullException"><paramref name="roleScope"/> or <paramref name="properties"/> is null.</exception>
-        public virtual async Task<Response<KeyVaultRoleAssignment>> CreateRoleAssignmentAsync(KeyVaultRoleScope roleScope, KeyVaultRoleAssignmentProperties properties, Guid name = default, CancellationToken cancellationToken = default)
+        public virtual async Task<Response<KeyVaultRoleAssignment>> CreateRoleAssignmentAsync(KeyVaultRoleScope roleScope, KeyVaultRoleAssignmentProperties properties, Guid? name = default, CancellationToken cancellationToken = default)
         {
             using DiagnosticScope scope = _diagnostics.CreateScope($"{nameof(KeyVaultAccessControlClient)}.{nameof(CreateRoleAssignment)}");
             scope.Start();
             try
             {
-                var _name = name == default ? Guid.NewGuid().ToString() : name.ToString();
+                var _name = (name ?? Guid.NewGuid()).ToString();
                 return await _assignmentsRestClient.CreateAsync(VaultUri.AbsoluteUri, roleScope.ToString(), _name, new RoleAssignmentCreateParameters(properties), cancellationToken)
                 .ConfigureAwait(false);
             }