/**
 * Class representing the lifecycle status of a Content Item with helper functions.
 */
export declare class ContentLifecycle {
    /**
     * Date the content should expire in ISO 8601 format.
     * The content will not become unpublished at this time but this value may be used
     * by applications to choose not to show this content.
     */
    expiryTime: string;
    /**
     * Creates a new ContentLifecycle instance.
     * @param data JSON representation of the ContentLifecycle model
     */
    constructor(data?: any);
    /**
     * Returns a boolean to indicate if the content should no longer be displayed by your application.
     * @param currentTime Optional date to override the current time.
     */
    isExpired(currentTime?: Date): boolean;
    /**
     * Export to JSON
     */
    toJSON(): any;
}