export declare class Purchase { 'sku': string; 'amount': string; 'iso': string; 'count'?: number; static readonly discriminator: string | undefined; static readonly attributeTypeMap: Array<{ name: string; baseName: string; type: string; format: string; }>; static getAttributeTypeMap(): { name: string; baseName: string; type: string; format: string; }[]; constructor(); }