Fix "ambiguous match" error when exporting interface with multiple indexers (#197)

Co-authored-by: Manuel Leßmann <[email protected]>

Author: mlessmann

src/dscom.demo/assembly3/IDemoInterfaceComInvisible.cs

@@ -26,3 +26,12 @@ public interface IDemoInterfaceComVisible
 {
     void DoSomething(IDemoInterfaceComInvisible param);
 }
+
+[ComVisible(true)]
+public interface IDemoInterfaceIndexerInvisible
+{
+    public string this[int x] { get; }
+
+    [ComVisible(false)]
+    public string this[string s] { get; }
+}

src/dscom/writer/PropertyMethodWriter.cs

@@ -22,7 +22,7 @@ internal class PropertyMethodWriter : MethodWriter
     private readonly PropertyInfo? _propertyInfo;
     public PropertyMethodWriter(InterfaceWriter interfaceWriter, MethodInfo methodInfo, WriterContext context, string methodName) : base(interfaceWriter, methodInfo, context, methodName)
     {
-        _propertyInfo = methodInfo.DeclaringType!.GetProperty(GetPropertyName());
+        _propertyInfo = methodInfo.DeclaringType!.GetProperties().First(p => p.GetGetMethod() == methodInfo || p.GetSetMethod() == methodInfo);
         MemberInfo = _propertyInfo!;
     }