[Synapse] Update swagger to aa19725fe79aea2a9dc580f3c66f77f89cc34563,…

… bump to newest AccessControl API, add new Artifacts.Library API (#18343)

- There is work here porting the existing AccessControl tests to the new API but I've also [Ignore]'ed the test.
- The new API won't allow ID reuse for a month, and that's playing havoc w\ the recording system so far.

sdk/synapse/Azure.Analytics.Synapse.AccessControl/README.md

@@ -37,8 +37,9 @@ az synapse workspace create \
 ```
 
 ### Authenticate the client
-In order to interact with the Azure Synapse Analytics service, you'll need to create an instance of the [AccessControlClient](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/synapse/Azure.Analytics.Synapse.AccessControl/src/Customization/AccessControlClient.cs) class. You need a **workspace endpoint**, which you may see as "Development endpoint" in the portal,
- and **client secret credentials (client id, client secret, tenant id)** to instantiate a client object.
+In order to interact with the Azure Synapse Analytics service, you'll need to create an instance of a [RoleAssignmentsClient](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/synapse/Azure.Analytics.Synapse.AccessControl/src/Customization/RoleAssignmentsClient.cs) and/or a [RoleDefinitionsClient](https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/synapse/Azure.Analytics.Synapse.AccessControl/src/Customization/RoleDefinitionsClient.cs) class.
+
+You will also  need a **workspace endpoint**, which you may see as "Development endpoint" in the portal, and **client secret credentials (client id, client secret, tenant id)** to instantiate a client object.
 
 Client secret credential authentication is being used in this getting started section but you can find more ways to authenticate with [Azure identity](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/identity/Azure.Identity). To use the [DefaultAzureCredential](https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/identity/Azure.Identity#defaultazurecredential) provider shown below,
 or other credential providers provided with the Azure SDK, you should install the Azure.Identity package:
@@ -49,8 +50,9 @@ Install-Package Azure.Identity
 
 ## Key concepts
 
-### AccessControlClient
-With a `AccessControlClient` you can get role assignments from the workspace, create new role assignments, and delete role assignments.
+### RoleAssignmentsClient & RoleDefinitionsClient
+
+With a `RoleAssignmentsClient` you can create, update, and delete role assignments. With a `RoleDefinitionsClient` you can get role assignments from the workspace.
 
 ### Role Assignment
 The way you control access to Synapse resources is to create role assignments. A role assignment is the process of attaching a role definition to a user, group, service principal, or managed identity at a particular scope for the purpose of granting access. Access is granted by creating a role assignment, and access is revoked by removing a role assignment.
@@ -67,33 +69,38 @@ The Azure.Analytics.Synapse.AccessControl package supports synchronous and async
 
 ### Create access control client
 
-To interact with Azure Synapse, you need to instantiate a `AccessControlClient`. It requires an endpoint URL and a `TokenCredential`.
+To interact with Azure Synapse, you need to instantiate a `RoleAssignmentsClient` and a `RoleDefinitionsClient`. It requires an endpoint URL and a `TokenCredential`.
 
 ```C# Snippet:CreateAccessControlClient
 // Replace the string below with your actual endpoint url.
 string endpoint = "<my-endpoint-url>";
 
-AccessControlClient client = new AccessControlClient(new Uri(endpoint), new DefaultAzureCredential());
+RoleAssignmentsClient roleAssignmentsClient = new RoleAssignmentsClient(new Uri(endpoint), new DefaultAzureCredential());
+RoleDefinitionsClient definitionsClient = new RoleDefinitionsClient(new Uri(endpoint), new DefaultAzureCredential());
 ```
 
 ### Create a role assignment
 
 First, you need to the determine the ID of the role you wish to assign, along with the ID of the principal you wish to assign that role.
 
 ```C# Snippet:PrepCreateRoleAssignment
-Pageable<SynapseRole> roles = client.GetRoleDefinitions();
-SynapseRole role = roles.Single(role => role.Name == "Workspace Admin");
-string roleID = role.Id;
+Response<IReadOnlyList<SynapseRoleDefinition>> roles = definitionsClient.ListRoleDefinitions();
+SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Workspace Admin");
+Guid roleId = role.Id.Value;
+
+string assignedScope = "workspaces/<my-workspace-name>";
 
 // Replace the string below with the ID you'd like to assign the role.
-string principalId = "<my-principal-id>";
+Guid principalId = Guid.Parse("<my-principal-id>");
+
+// Replace the string below with the ID of the assignment you'd like to use.
+string assignmentId = "<my-assignment-id>";
 ```
 
-Then create an instance of `RoleAssignmentOptions` with the requested values. Finally call `CreateRoleAssignment` with the options to create the role assignment.
+Then call `CreateRoleAssignment` with the options to create the role assignment.
 
 ```C# Snippet:CreateRoleAssignment
-RoleAssignmentOptions request = new RoleAssignmentOptions(roleID, principalId);
-Response<RoleAssignmentDetails> response = client.CreateRoleAssignment(request);
+Response<RoleAssignmentDetails> response = roleAssignmentsClient.CreateRoleAssignment (assignmentId, roleId, principalId, assignedScope);
 RoleAssignmentDetails roleAssignmentAdded = response.Value;
 ```
 
@@ -102,17 +109,17 @@ RoleAssignmentDetails roleAssignmentAdded = response.Value;
 You can retrieve the details of a role assignment by calling `GetRoleAssignmentById`, passing in the assignment ID.
 
 ```C# Snippet:RetrieveRoleAssignment
-RoleAssignmentDetails roleAssignment = client.GetRoleAssignmentById(roleAssignmentAdded.Id);
-Console.WriteLine($"Role {roleAssignment.RoleId} is assigned to {roleAssignment.PrincipalId}.");
+RoleAssignmentDetails roleAssignment = roleAssignmentsClient.GetRoleAssignmentById(roleAssignmentAdded.Id);
+Console.WriteLine($"Role {roleAssignment.RoleDefinitionId} is assigned to {roleAssignment.PrincipalId}.");
 ```
 
 ### List role assignments
 
-To enumerate all role assignments in the Synapse workspace you can call `GetRoleAssignments`.
+To enumerate all role assignments in the Synapse workspace you can call `ListRoleDefinitions`.
 
 ```C# Snippet:ListRoleAssignments
-Response<IReadOnlyList<RoleAssignmentDetails>> roleAssignments = client.GetRoleAssignments();
-foreach (RoleAssignmentDetails assignment in roleAssignments.Value)
+Response<IReadOnlyList<SynapseRoleDefinition>> roleAssignments = definitionsClient.ListRoleDefinitions();
+foreach (SynapseRoleDefinition assignment in roleAssignments.Value)
 {
     Console.WriteLine(assignment.Id);
 }
@@ -123,7 +130,7 @@ foreach (RoleAssignmentDetails assignment in roleAssignments.Value)
 To delete a role assignment no longer needed you can call `DeleteRoleAssignmentById`, passing in the assignment ID.
 
 ```C# Snippet:DeleteRoleAssignment
-client.DeleteRoleAssignmentById(roleAssignment.Id);
+roleAssignmentsClient.DeleteRoleAssignmentById(roleAssignment.Id);
 ```
 
 ## To build