syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"impl<'o,"}]}
source_snippet: impl<'o, 'tcx> TraitObligationStack<'o, 'tcx> {
context_after:     fn list(&'o self) -> TraitObligationStackList<'o, 'tcx> {