import { acceptedCurrencyCodes, Amount, CurrencyCodes, PurchaseUnitBuilderJSON } from "../types/Order";
import ItemsBuilder from "./ItemsBuilder";
export default class PurchaseUnitBuilder {
    private reference_id?;
    private description?;
    private readonly amount;
    private items;
    constructor(data?: Partial<Amount>);
    setDescription(description: string): PurchaseUnitBuilder;
    setPrice(price: number): PurchaseUnitBuilder;
    setCurrency(currency: CurrencyCodes | acceptedCurrencyCodes): PurchaseUnitBuilder;
    setReferenceID(reference_id: string): PurchaseUnitBuilder;
    setItems(...items: ItemsBuilder[]): PurchaseUnitBuilder;
    addItems(...items: ItemsBuilder[]): PurchaseUnitBuilder;
    toJSON(): Readonly<PurchaseUnitBuilderJSON>;
}