import { AppearanceItem } from "./AppearanceItem";
/**
 * Parameters specifying set of elements (i.e. appearance items) to represent electronic seal
 * required for {@link PDFElectronicSealParams}.
 */
export declare class AppearanceOptions {
    private readonly appearanceItems;
    /**
     * Constructs a new `AppearanceOptions` instance.
     *
     * @param params - The parameters for constructing an instance of `AppearanceOptions`.
     * @param [params.items] - The list of seal appearance items. Default value is `[NAME,LABELS]`.
     */
    constructor(params: {
        items?: AppearanceItem[];
    });
    /**
     * Returns the set of seal appearance items.
     * @returns the set of seal appearance items
     */
    get items(): Set<AppearanceItem>;
}