+
+#define mDOMNode_option_mDOMNodeRef(p) (((p) != NULL) ? ml_some((value) (p)) : Val_unit)
+#define mDOMNodeRef_mDOMNode_option(v) ((v == Val_unit) ? NULL : (mDOMNodeRef)Field((v),0))
+#define Val_mDOMNodeRef(p) (mDOMNode_option_mDOMNodeRef(p))
+#define mDOMNodeRef_val(v) (mDOMNodeRef_mDOMNode_option(v))