import { Flow, SerializedFlow } from './flow.js';
import { Node, SerializedNode, NodeOptions } from './node.js';
import { DataPersistenceProvider } from '../common/interfaces.js';
export declare class SubFlowNode extends Node {
    subFlow?: Flow;
    constructor(flow: Flow, options: SubFlowNodeOptions);
    setupIO(): void;
    created(): void;
    process(): void;
    private static renderOpenButton;
    serialize(persist?: DataPersistenceProvider): Promise<SerializedSubFlowNode>;
}
export interface SubFlowNodeOptions extends NodeOptions {
    subFlow?: Flow;
}
export interface SerializedSubFlowNode extends SerializedNode {
    subFlow?: SerializedFlow;
}