export declare class ExtensionRegistrationError extends Error {
    constructor(message: string);
}
/**
 * Manages extension registration
 */
export declare class ExtensionRegistrationService {
    /**
     * open the create add on bar
     * @param guestConnection - the guest connection
     * @param appExtensionId - the app extension id
     *
     * example:
            const ExtensionRegistration = (): React.JSX.Element => {
                const init = async (): Promise<void> => {
                const guestConnection = await register({
                    id: extensionId,
                    methods: {
                    createAddOnBar: {
                        addToggle: async (appExtensionId: string): Promise<ToggleItem[]> => {
                        return [
                            {
                            appMetaData: getAppMetadata(appExtensionId),
                            onClick: async () => {
                                await openCreateAddOnBar(guestConnection, appExtensionId);
                            },
                            }]
                        }
                    }
                    }
                }
                return <ExtensionRegistration />
            }
     */
    static openCreateAddOnBar(guestConnection: any, appExtensionId: string): any;
    /**
     * open the add context add on bar
     * @param guestConnection - the guest connection
     * @param appExtensionId - the app extension id
     */
    static openAddContextAddOnBar(guestConnection: any, appExtensionId: string): any;
    /**
     * close the add context add on dialog
     * @param guestConnection - the guest connection
     */
    static closeAddContextAddOnBar(guestConnection: any): any;
}