еще один шаг до последнего шага

Example.Backend/PrinterFactory.cs

@@ -8,8 +8,20 @@ namespace Example.Backend;
 [SharedObjectSingleton]
 public class PrinterFactory : IPrinterFactory
 {
+    private List<IPrinter> _printers = new();
+
     public SharedObject<IPrinter> Create(string printerName)
     {
-        return new Printer {Name = printerName};
+        return new Printer { Name = printerName };
+    }
+
+    public void Register(SharedObject<IPrinter> printer)
+    {
+        _printers.Add(printer.Value);
+    }
+
+    public SharedObject<IPrinter> GetPrinterByName(string printerName)
+    {
+        return new SharedObject<IPrinter>(_printers.Find(i => i.GetName() == printerName)!);
     }
 }