Nullable newInput on ContinueAsNew (#95)

Author: jviau

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Durable Functions class-based syntax now resolves `ITaskActivity` instances from `IServiceProvider`, if available there.
 - `DurableTaskClient` methods have been touched up to ensure `CancellationToken` is included, as well as is the last parameter.
 - Removed obsolete/unimplemented local lambda activity calls from `TaskOrchestrationContext`
+- Input is now an optional parameter on `TaskOrchestrationContext.ContinueAsNew`
 
 ## v1.0.0-rc.1
 

src/Abstractions/TaskOrchestrationContext.cs

@@ -333,7 +333,7 @@ public Task CallSubOrchestratorAsync(
     /// history when the orchestration instance restarts. If <c>false</c>, any unprocessed
     /// external events will be discarded when the orchestration instance restarts.
     /// </param>
-    public abstract void ContinueAsNew(object newInput, bool preserveUnprocessedEvents = true);
+    public abstract void ContinueAsNew(object? newInput = null, bool preserveUnprocessedEvents = true);
 
     /// <summary>
     /// Creates a new GUID that is safe for replay within an orchestration or operation.

src/Worker/Core/Shims/TaskOrchestrationContextWrapper.cs

@@ -227,7 +227,7 @@ public override void SetCustomStatus(object? customStatus)
     }
 
     /// <inheritdoc/>
-    public override void ContinueAsNew(object newInput, bool preserveUnprocessedEvents = true)
+    public override void ContinueAsNew(object? newInput = null, bool preserveUnprocessedEvents = true)
     {
         this.innerContext.ContinueAsNew(newInput);