import { ITree } from './tree.model';
import * as i0 from "@angular/core";
export declare class TreeService {
    /**
     * Gets the tree identified by `id` if the tree is visible.
     * @param id Identifier of a tree.
     */
    get<T>(id: string): ITree<T> | undefined;
    static ɵfac: i0.ɵɵFactoryDeclaration<TreeService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TreeService>;
}