import type { IActivityHandler, IActivityContext } from "../../IActivityHandler";
/** Defines inputs for the Union. This activity relies on an ArcGIS Geometry Service REST endpoint. */
export interface UnionServiceTaskInputs {
    url: string;
    geometry1: __esri.GeometryUnion | __esri.GeometryUnion[];
    geometry2: __esri.GeometryUnion | __esri.GeometryUnion[];
}
/** Defines the outputs for the Union activity. */
export interface UnionServiceTaskOutputs {
    /** @description The unioned results. */
    geometry: __esri.Geometry | null | undefined;
}
export declare class UnionServiceTask implements IActivityHandler {
    static readonly action = "gcx:wf:arcgis::UnionServiceTask";
    static readonly suite = "gcx:wf:builtin";
    execute(inputs: UnionServiceTaskInputs, context: IActivityContext): Promise<UnionServiceTaskOutputs>;
}