{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"//"}]}
                    // FIXME: account for RPITIT.
                if let hir::TyKind::OpaqueDef(op_ty, ..) = hir_ty.kind
                    && let [hir::GenericBound::Trait(trait_ref)] = op_ty.bounds