import { Message } from '@lumino/messaging';
export type SparkUI2MessageTypes = 'start-clicked' | 'stop-clicked' | 'enable-hive-support-clicked' | 'profile-create-cancel-clicked' | 'profile-create-create-clicked' | 'add-new-property-clicked' | 'remove-property-clicked' | 'profile-save-clicked' | 'profile-create-new-clicked' | 'profile-remove-clicked' | 'profile-selection-changed';
export declare class SparkUIMessage extends Message {
    private readonly _payload;
    constructor(type: SparkUI2MessageTypes, payload?: any);
    get payload(): any;
}