public void setFunction(
     ReferenceItem<InstanceFunction> inst, ReferenceItem<FunctionDeclaration> base) {
   BaseFunction.Head head = new BaseFunction.Head(base);
   head.setDoc(base.getObject().getDoc());
   head.setInstanceRef(inst);
   // if (base.getDoc() != null) inst.setDoc(base.getDoc());
   inst.getObject().setHead(head.createReferenceItemWithLocation(base.getLocation()));
 }