syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> Result<PredicateObligations<'tcx>, SelectionError<'tcx>> {
context_before:         found_trait_ref: ty::PolyTraitRef<'tcx>,
context_after:         let found_trait_ref = self.infcx.instantiate_binder_with_fresh_vars(