import { OnInit } from '@angular/core';
import { AtCollapseItemComponent } from './at-collapse-item/at-collapse-item.component';
export declare class AtCollapseComponent implements OnInit {
    at_collapse_items: AtCollapseItemComponent[];
    constructor();
    ngOnInit(): void;
    private _atAccordion;
    atAccordion: boolean;
    private _simple;
    atSimple: boolean;
    pushItems(item: AtCollapseItemComponent): void;
    setAllClose(): void;
}