declare const RetryInfo: import("protobufjs").Type;
/**
 * Builds the filesystem path to a particular proto sub-path, for protos
 * stored in `@google-cloud/spanner-api`.
 *
 * @param protoSubPath A sub-path like 'google/spanner', or undefined to get the base path.
 * @returns The requested path.
 *
 * @private
 */
export declare function getProtoPath(protoSubPath?: string): string;
/**
 * Returns the RetryInfo type that was loaded from status.json. This is
 * not included in the spanner-api package, so it's imported here.
 *
 * @returns The RetryInfo type.
 *
 * @private
 */
export declare function getRetryInfo(): typeof RetryInfo;
export {};