/** Prepares information for calls to get layer versions of a specific catalog version. */
export declare class LayerVersionsRequest {
    private version;
    private billingTag?;
    /**
     * Gets a catalog version.
     *
     * @returns The catalog version.
     */
    getVersion(): number | undefined;
    /**
     * Sets the catalog version value that is used in the 'getLayerVersions' method of [[CatalogClient]].
     *
     * @param version Specify the catalog version.
     * @returns The updated [[LayerVersionsRequest]] instance
     */
    withVersion(version: number): LayerVersionsRequest;
    /**
     * An optional free-form tag that is used for grouping billing records together.
     *
     * If supplied, it must be 4–16 characters long and contain only alphanumeric ASCII characters [A–Za–z0–9].
     *
     * @param tag The `BillingTag` string.
     * @return The updated [[LayerVersionsRequest]] instance that you can use to chain methods.
     */
    getBillingTag(): string | undefined;
    /**
     * An optional free-form tag that is used for grouping billing records together.
     *
     * If supplied, it must be 4–16 characters long and contain only alphanumeric ASCII characters [A–Za–z0–9].
     */
    withBillingTag(tag: string): LayerVersionsRequest;
}