syntax_data: {"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"self.tcx().async_fn_trait_kind_from_def_id(obligation.predicate.def_id()).unwrap();"}]}
source_snippet:             self.tcx().async_fn_trait_kind_from_def_id(obligation.predicate.def_id()).unwrap();
context_before:         let goal_kind =