/**
 * Creates an empty group.
 *
 * @remarks
 * This node also has its own transforms. And if it is set as input of other nodes, their objects will be added as children to the object of this node.
 *
 */
import { TypedObjNode } from './_Base';
import { Group } from 'three/src/objects/Group';
import { TransformController } from './utils/TransformController';
import { FlagsControllerD } from '../utils/FlagsController';
import { NodeParamsConfig } from '../utils/params/ParamsConfig';
import { HierarchyController } from './utils/HierarchyController';
declare const NullObjParamConfig_base: {
    new (...args: any[]): {
        transform: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.FOLDER>;
        keepPosWhenParenting: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.BOOLEAN>;
        rotationOrder: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.INTEGER>;
        t: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.VECTOR3>;
        r: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.VECTOR3>;
        s: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.VECTOR3>;
        scale: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.FLOAT>;
        matrixAutoUpdate: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.BOOLEAN>;
        updateTransformFromObject: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.BUTTON>;
        tlookAt: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.BOOLEAN>;
        lookAtPos: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.VECTOR3>;
        up: import("../utils/params/ParamsConfig").ParamTemplate<import("../../poly/ParamType").ParamType.VECTOR3>;
    };
} & typeof NodeParamsConfig;
declare class NullObjParamConfig extends NullObjParamConfig_base {
}
export declare class NullObjNode extends TypedObjNode<Group, NullObjParamConfig> {
    params_config: NullObjParamConfig;
    static type(): string;
    readonly hierarchy_controller: HierarchyController;
    readonly transform_controller: TransformController;
    readonly flags: FlagsControllerD;
    private _helper;
    create_object(): Group;
    initializeNode(): void;
    private _updateHelperHierarchy;
    cook(): void;
}
export {};