syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"fold_arc(self,"}]}
source_snippet:         fold_arc(self, |t| t.try_fold_with(folder))
context_before:     fn try_fold_with<F: FallibleTypeFolder<I>>(self, folder: &mut F) -> Result<Self, F::Error> {
context_after:     }