syntax_data: {"ast_node_type":"function","tokens":[{"end":61,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn list(&'o self) -> TraitObligationStackList<'o, 'tcx> {
context_before: impl<'o, 'tcx> TraitObligationStack<'o, 'tcx> {
context_after:         TraitObligationStackList::with(self)