{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"Ok(TyKind::FnPtr(P(FnPtrTy"}]}
        Ok(TyKind::FnPtr(P(FnPtrTy { ext, safety, generic_params: params, decl, decl_span })))
        let decl_span = span_start.to(self.prev_token.span);
    }