import { BaseServiceFactoryReference } from './BaseServiceFactoryReference';
import { FeatureFactory } from '../FeatureFactory';
/**
 */
export declare class AsyncServiceFunctionReference extends BaseServiceFactoryReference {
    private async;
    private promise;
    readonly type = "async";
    constructor(async: () => Promise<any>, feature: FeatureFactory<any>);
    label(): string;
    /**
     * Wait for this service to be invoked.
     */
    wait: () => Promise<void>;
}