Typedef duplicates across modules?

I have two modules which share a common class definition and therefore a
required function pointer typedef:

%module Module1

typedef void(*MyClassCallback)(MyClass&);
class MyClass
{
public:
     MyClass(MyClassCallback initializer);
};

%module Module2

%import "Module1.i"
%callback("%s_cb");
void DoSomething(MyClass&);
%nocallback;

When I generate C# wrappers for both modules, each module contains the
exact same wrapper class for the function pointer typedef:

public class SWIGTYPE_p_f_r_MyClass__void {
   private global::System.Runtime.InteropServices.HandleRef swigCPtr;

   internal SWIGTYPE_p_f_r_MyClass__void(global::System.IntPtr cPtr,
bool futureUse) {
     swigCPtr = new
global::System.Runtime.InteropServices.HandleRef(this, cPtr);
   }

   protected SWIGTYPE_p_f_r_MyClass__void() {
     swigCPtr = new
global::System.Runtime.InteropServices.HandleRef(null,
global::System.IntPtr.Zero);
   }

   internal static global::System.Runtime.InteropServices.HandleRef
getCPtr(SWIGTYPE_p_f_r_MyClass__void obj) {
     return (obj == null) ? new
global::System.Runtime.InteropServices.HandleRef(null,
global::System.IntPtr.Zero) : obj.swigCPtr;
   }

   internal static global::System.Runtime.InteropServices.HandleRef
swigRelease(SWIGTYPE_p_f_r_MyClass__void obj) {
     return (obj == null) ? new
global::System.Runtime.InteropServices.HandleRef(null,
global::System.IntPtr.Zero) : obj.swigCPtr;
   }
}

Is this intended behaviour and, if yes, how can I produce valid code
with no conflicting class definitions like this?

Thanks in advance!

Marc



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