/**
 * Supported elements to represent electronic seal required for {@link AppearanceOptions}.
 */
export declare enum AppearanceItem {
    /**
     * Represents the name of the certificate owner.
     */
    NAME = "NAME",
    /**
     * Represents the date of applying the electronic seal.
     */
    DATE = "DATE",
    /**
     * Represents the distinguished name information of the certificate.
     */
    DISTINGUISHED_NAME = "DISTINGUISHED_NAME",
    /**
     * Represents labels for seal information.
     */
    LABELS = "LABELS",
    /**
     * Represents the background image to be used for sealing.
     */
    SEAL_IMAGE = "SEAL_IMAGE"
}