public static void DefineProperty(
this TypeBuilder t, String name, Type propertyType, out MethodBuilder get, out MethodBuilder set, out FieldBuilder backing)
{
t.DefineProperty(name, propertyType, out get, out set);
backing = t.DefineField("_" + name.ToLower(), propertyType, FA.Private);
get.il().ldarg(0).ldfld(backing).ret();
set.il().ldarg(0).ldarg(1).stfld(backing).ret();
}