import { Observable } from "rxjs";
import type { OpenIdConfiguration } from "../config/openid-configuration";
export declare class RefreshSessionIframeService {
    private readonly loggerService;
    private readonly urlService;
    private readonly silentRenewService;
    private readonly document;
    private silentRenewEventHandlerSubscription?;
    refreshSessionWithIframe(config: OpenIdConfiguration, allConfigs: OpenIdConfiguration[], customParams?: {
        [key: string]: string | number | boolean;
    }): Observable<boolean>;
    private sendAuthorizeRequestUsingSilentRenew;
    private initSilentRenewRequest;
}
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