import { ValidationBase } from "../helpers/validation/ValidationBase";
import { StepModel } from "./StepModel";
import { Plottable } from "./Plottable";
import { Serializable } from "../interfaces/Serializable";
import { ParameterTypeModel } from "./ParameterTypeModel";
import { ExpressionModel } from "./ExpressionModel";
export declare class WorkflowStepOutputModel extends ValidationBase implements Plottable, Serializable<any> {
    type?: ParameterTypeModel;
    fileTypes: string[];
    label?: string;
    description?: string;
    secondaryFiles: ExpressionModel[];
    parentStep: StepModel;
    id: string;
    customProps: any;
    serialize(): any;
    deserialize(attr: any): void;
    isVisible: boolean;
    /**
     * ID used for creating connections
     */
    readonly sourceId: string;
    /**
     * ID used for graph
     */
    readonly connectionId: string;
}