import { HttpHeaders, HttpResponseBase } from '@angular/common/http';
import { ConcurrencyInfo } from '../models';
import * as i0 from "@angular/core";
export declare class ConcurrencyStoreService {
    private _store;
    get(key: string): ConcurrencyInfo | null;
    set(key: string, info: ConcurrencyInfo): void;
    getHeaders(key: string): {
        headers: HttpHeaders | {
            [header: string]: string | string[];
        };
        observe: 'response';
    };
    appendHeaders(key: string, headers: HttpHeaders): HttpHeaders;
    fromHeaders(key: string, response: HttpResponseBase): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ConcurrencyStoreService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ConcurrencyStoreService>;
}