Auto interface demo (#3399)

* Demo of InterfaceGenerator

* fmt

* use new package

* update autointerface again

* fix autogenerated interfaces

Author: adamhathcock

DUI3-DX/Directory.Build.Props

@@ -9,5 +9,6 @@
 
     <ItemGroup>
         <PackageReference Include="PolySharp" Version="1.14.1" />
+        <PackageReference Include="Speckle.InterfaceGenerator" Version="0.9.4" />
     </ItemGroup>
 </Project>

DUI3-DX/Sdk/Speckle.Autofac/DependencyInjection/Factory.cs

@@ -1,7 +1,9 @@
 using Autofac.Features.Indexed;
+using Speckle.InterfaceGenerator;
 
 namespace Speckle.Autofac.DependencyInjection;
 
+[GenerateAutoInterface]
 public class Factory<TKey, TValue> : IFactory<TKey, TValue>
   where TValue : class
 {
@@ -14,7 +16,10 @@ public Factory(IIndex<TKey, TValue> types)
 
   public TValue? ResolveInstance(TKey strongName)
   {
-    _types.TryGetValue(strongName, out TValue value);
-    return value;
+    if (_types.TryGetValue(strongName, out TValue value))
+    {
+      return value;
+    }
+    return null;
   }
 }

DUI3-DX/Sdk/Speckle.Autofac/DependencyInjection/IFactory.cs

@@ -1,7 +1,12 @@
 using Autofac;
+using Speckle.InterfaceGenerator;
 
 namespace Speckle.Autofac.DependencyInjection;
 
+public partial interface IUnitOfWork<TService> : IDisposable
+  where TService : class { }
+
+[GenerateAutoInterface]
 public sealed class UnitOfWork<TService> : IUnitOfWork<TService>
   where TService : class
 {
@@ -14,8 +19,9 @@ public UnitOfWork(ILifetimeScope unitOfWorkScope, TService service)
     Service = service;
   }
 
-  public TService Service { get; private set; }
+  public TService Service { get; }
 
+  [AutoInterfaceIgnore]
   public void Dispose() => Disposing(true);
 
   private void Disposing(bool fromDispose)

DUI3-DX/Sdk/Speckle.Autofac/DependencyInjection/IUnitOfWork.cs

@@ -1,9 +1,11 @@
 using Autofac;
 using Autofac.Core;
+using Speckle.InterfaceGenerator;
 using Speckle.Core.Logging;
 
 namespace Speckle.Autofac.DependencyInjection;
 
+[GenerateAutoInterface]
 public class UnitOfWorkFactory : IUnitOfWorkFactory
 {
   private readonly ILifetimeScope _parentScope;

DUI3-DX/Sdk/Speckle.Autofac/DependencyInjection/IUnitOfWorkFactory.cs

@@ -1,5 +1,8 @@
+using Speckle.InterfaceGenerator;
+
 namespace Speckle.Autofac.Files;
 
+[GenerateAutoInterface]
 public class StorageInfo : IStorageInfo
 {
   public IEnumerable<string> GetFilenamesInDirectory(string path, string pattern)