import { Loader } from 'three/webgpu';
import { BaseGroup, type Viewer } from 'u-space';
import { SceneLoader, type SceneGroup } from './SceneLoader';
import { SemanticLoader } from '../semantics/SemanticLoader';
import type { SemanticGroup } from '../semantics';
export declare class UManagerSceneGroup extends BaseGroup {
    isUManagerSceneGroup: boolean;
    type: string;
    semanticGroup: SemanticGroup;
    sceneGroup: SceneGroup;
    constructor(semanticGroup: SemanticGroup, sceneGroup: SceneGroup);
}
export declare class UManagerLoader extends Loader {
    #private;
    viewer: Viewer;
    key: string;
    sceneLoader: SceneLoader;
    semanticLoader: SemanticLoader;
    constructor(viewer: Viewer);
    setKey(key: string): this;
    loadAsync(): Promise<UManagerSceneGroup>;
    clearCache(): void;
    dispose(): void;
}