{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
                let clauses = expected_ty.impl_trait_bounds(self.db).into_iter().flatten().map(
            TyKind::Alias(AliasTy::Opaque(OpaqueTy { .. })) | TyKind::OpaqueType(..) => {
                    |b: chalk_ir::Binders<chalk_ir::WhereClause<Interner>>| {