Adding a TypeDefinition from another Assembly

Question

This one is driving me crazy.

AssemblyDefinition asm1 = AssemblyDefinition.ReadAssembly(example);
AssemblyDefinition asm2 = AssemblyDefinition.ReadAssembly(example2);
asm2.MainModule.Types.Add(asm1.MainModule.Types[0]);

Whenever I try to execute the above code I get this error 'Type already attached' I decided to look this error at MonoCecil source and I found it throws this error because the Type's MainMoudle isn't asm2 MainModules. So I decided to Copy that Type to a new one.

TypeDefinition type2 = new TypeDefinition("", "type2",  Mono.Cecil.TypeAttributes.Class);
foreach (MethodDefinition md in asm2.Methods )
{
        type2.Methods.Add(md);
}

And then add this type to my assembly normally but this throws another error, 'Specified method is not supported.'. Any thoughts why I am getting this error?

Edit: Just to add, the type I'm trying to add contains some methods which uses pointers. Might this be the problem? As far as I know mono supports that but not mixed mode.