syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// call `ty.super_visit_with(self)`, but any other visiting should be done
context_before:     /// that method. For example, in `MyVisitor::visit_ty(ty)`, it is valid to
context_after:     /// with `xyz.visit_with(self)`.