private void CreateShutdownIL(ILGenerator il){
// release references to global instances
foreach (Object item in this.vsaItems){
if (item is VsaHostObject){
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Stsfld, ((VsaHostObject)item).Field);
}
}
il.Emit(OpCodes.Ret);
}