{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"hir::FnRetTy::Return(ty)"}]}
                            hir::FnRetTy::Return(ty) => (ty_to_string(&self.tcx, ty), ty.span),
                            hir::FnRetTy::DefaultReturn(span) => ("()".to_string(), span),
                        };