import { ElTreeGridPresentationNode } from './tree-grid.model';
export interface ElToggleOptions {
    deep?: boolean;
}
export declare class ElTreeGridService<T> {
    expand(data: ElTreeGridPresentationNode<T>[], row: T, options?: ElToggleOptions): void;
    collapse(data: ElTreeGridPresentationNode<T>[], row: T, options?: ElToggleOptions): void;
    toggle(data: ElTreeGridPresentationNode<T>[], row: T, options?: ElToggleOptions): void;
    private find;
}