repo creation with initial code after cloning public repo

Jellyfin.Server/Migrations/IAsyncMigrationRoutine.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Jellyfin.Server.Migrations;
+
+/// <summary>
+/// Interface that describes a migration routine.
+/// </summary>
+internal interface IAsyncMigrationRoutine
+{
+    /// <summary>
+    /// Execute the migration routine.
+    /// </summary>
+    /// <param name="cancellationToken">A cancellation token triggered if the migration should be aborted.</param>
+    /// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
+    public Task PerformAsync(CancellationToken cancellationToken);
+}
+
+/// <summary>
+/// Interface that describes a migration routine.
+/// </summary>
+[Obsolete("Use IAsyncMigrationRoutine instead")]
+internal interface IMigrationRoutine
+{
+    /// <summary>
+    /// Execute the migration routine.
+    /// </summary>
+    [Obsolete("Use IAsyncMigrationRoutine.PerformAsync instead")]
+    public void Perform();
+}