132   Derived &getDerived() { return *static_cast<Derived *>(this); }  in getDerived()  function
133   const Derived &getDerived() const {  in getDerived()  function
139     return getDerived().visit(Node.first_child(), std::forward<Args>(args)...);  in visitDomain()
144         getDerived().visit(Band.child(0), std::forward<Args>(args)...);  in visitBand()
152         getDerived().visit(Sequence.child(0), std::forward<Args>(args)...);  in visitSequence()
155           getDerived().visit(Sequence.child(i), std::forward<Args>(args)...));  in visitSequence()
162         getDerived().visit(Set.child(0), std::forward<Args>(args)...);  in visitSet()
166                            getDerived()  in visitSet()
180         getDerived()  in visitMark()
191     isl::schedule_node NewChild = getDerived()  in visitExtension()
204         getDerived().visit(Filter.child(0), std::forward<Args>(args)...);  in visitFilter()