import * as pb from "../proto/orchestrator_service_pb";
import { Task } from "./task";
export declare class CompletableTask<T> extends Task<T> {
    constructor();
    complete(result: T): void;
    fail(message: string, details?: pb.TaskFailureDetails): void;
    /**
     * Fails the task with a pre-constructed error.
     * Use this when a more specific error type (e.g., EntityOperationFailedException)
     * should be preserved as the task's exception rather than wrapping in a generic TaskFailedError.
     */
    failWithError(error: Error): void;
}