{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"hir::FnRetTy::DefaultReturn(_)"}]}
            hir::FnRetTy::DefaultReturn(_) => body.value.span,
        let return_or_body_span = match decl.output {
            hir::FnRetTy::Return(ty) => ty.span,