remove default value for memorystream when writing policies

src/Altinn.AccessManagement.Core/Repositories/Interfaces/IPolicyRepository.cs

@@ -29,7 +29,7 @@ public interface IPolicyRepository
     /// <param name="fileStream">File stream of the policy file to be written</param>
     /// <param name="cancellationToken">cancellation token</param>
     /// <returns>Azure response BlobContentInfo</returns>
-    Task<Response<BlobContentInfo>> WritePolicyAsync(Stream fileStream = null, CancellationToken cancellationToken = default);
+    Task<Response<BlobContentInfo>> WritePolicyAsync(Stream fileStream, CancellationToken cancellationToken = default);
 
     /// <summary>
     /// Writes a file stream to blobstorage to the specified path, including the conditional check that the provided blob lease id is valid.

src/Altinn.AccessManagement.Core/Services/Interfaces/ISingleRightsService.cs

@@ -23,6 +23,7 @@ public interface ISingleRightsService
         /// <param name="authenticatedUserId">The user id of the authenticated user performing the delegation</param>
         /// <param name="authenticatedUserAuthlevel">The authentication level of the authenticated user performing the delegation</param>
         /// <param name="delegation">The delegation</param>
+        /// <param name="cancellationToken">CancellationToken</param>
         /// <returns>The result of the delegation</returns>
         public Task<DelegationActionResult> DelegateRights(int authenticatedUserId, int authenticatedUserAuthlevel, DelegationLookup delegation, CancellationToken cancellationToken = default);
 

src/Altinn.AccessManagement.Core/Services/PolicyAdministrationPoint.cs

@@ -185,7 +185,7 @@ private async Task<bool> WriteDelegationPolicyInternal(string policyPath, List<R
             if (!await policyClient.PolicyExistsAsync(cancellationToken))
             {
                 // Create a new empty blob for lease locking
-                await policyClient.WritePolicyAsync(cancellationToken: cancellationToken);
+                await policyClient.WritePolicyAsync(new MemoryStream(), cancellationToken: cancellationToken);
             }
 
             string leaseId = await policyClient.TryAcquireBlobLease(cancellationToken);

src/Altinn.AccessManagement.Persistence/Policy/PolicyRepository.cs

@@ -82,7 +82,7 @@ public async Task<string> TryAcquireBlobLease(CancellationToken cancellationToke
     }
 
     /// <inheritdoc/>
-    public async Task<Response<BlobContentInfo>> WritePolicyAsync(Stream fileStream = null, CancellationToken cancellationToken = default)
+    public async Task<Response<BlobContentInfo>> WritePolicyAsync(Stream fileStream, CancellationToken cancellationToken = default)
     {
         return await RoundTripper(async () => await Client.UploadAsync(fileStream ?? new MemoryStream(), true, cancellationToken));
     }