export declare class OnlineInvoice {
    /**
    * the URL to an online invoice
    */
    'onlineInvoiceUrl'?: string;
    static discriminator: string | undefined;
    static attributeTypeMap: Array<{
        name: string;
        baseName: string;
        type: string;
    }>;
    static getAttributeTypeMap(): {
        name: string;
        baseName: string;
        type: string;
    }[];
}