работает при разделенной абстракции и реализации

Example.Shared/Example.Shared.csproj

@@ -7,9 +7,8 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <ProjectReference Include="..\mROA.Codegen\mROA.Codegen.csproj" 
-						OutputItemType="Analyzer"
-                        ReferenceOutputAssembly="false"/>
+        <ProjectReference Include="..\mROA.Codegen\mROA.Codegen.csproj" OutputItemType="Analyzer"
+                          ReferenceOutputAssembly="false"/>
       <ProjectReference Include="..\mROA\mROA.csproj" />
     </ItemGroup>
 

Example.Shared/IPage.cs

@@ -0,0 +1,9 @@
+using mROA.Implementation;
+
+namespace Example.Shared;
+
+[SharedObjectInterface]
+public interface IPage
+{
+    byte[] GetData();
+}

Example.Shared/IPrinter.cs

@@ -0,0 +1,11 @@
+using mROA.Implementation;
+
+namespace Example.Shared;
+
+[SharedObjectInterface]
+public interface IPrinter
+{
+    string GetName();
+    TransmittedSharedObject<IPage> Print(string text);
+
+}

Example.Shared/IPrinterFactory.cs

@@ -1,4 +1,3 @@
-using System.Text;
 using mROA.Implementation;
 
 namespace Example.Shared;
@@ -7,52 +6,4 @@ namespace Example.Shared;
 public interface IPrinterFactory
 {
     TransmittedSharedObject<IPrinter> Create(string printerName);
-}
-
-
-[SharedObjectSingleton]
-public class PrinterFactory : IPrinterFactory
-{
-    public TransmittedSharedObject<IPrinter> Create(string printerName)
-    {
-        return new Printer(){Name = printerName};
-    }
-}
-
-
-[SharedObjectInterface]
-public interface IPrinter
-{
-    string GetName();
-    TransmittedSharedObject<IPage> Print(string text);
-
-}
-
-public class Printer : IPrinter
-{
-    public string Name;
-    public string GetName()
-    {
-        return Name;
-    }
-
-    public TransmittedSharedObject<IPage> Print(string text)
-    {
-        return new Page {Text = text};
-    }
-}
-
-[SharedObjectInterface]
-public interface IPage
-{
-    byte[] GetData();
-}
-
-public class Page : IPage
-{
-    public string Text;
-    public byte[] GetData()
-    {
-        return Encoding.UTF8.GetBytes(Text);
-    }
 }