syntax_data: {"ast_node_type":"variable","tokens":[{"end":33,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let clause = self.kind();
context_before:     pub fn as_trait_clause(self) -> Option<ty::Binder<'tcx, TraitPredicate<'tcx>>> {
context_after:         if let ty::ClauseKind::Trait(trait_clause) = clause.skip_binder() {