import { StepBody } from "../abstractions";
import { WorkflowStep } from "../models";
import { WorkflowBuilder } from "./workflow-builder";
import { StepBuilder } from "./step-builder";
import { Sequence } from "../primitives";
export declare class ParallelStepBuilder<TData, TStepBody extends StepBody> {
    private workflowBuilder;
    private referenceBuilder;
    private step;
    constructor(workflowBuilder: WorkflowBuilder<TData>, step: WorkflowStep<TStepBody>, refBuilder: StepBuilder<Sequence, TData>);
    do(builder: (then: WorkflowBuilder<TData>) => void): ParallelStepBuilder<TData, TStepBody>;
    join(): StepBuilder<Sequence, TData>;
}