import { Transport, TransportRequest, TransportResponse } from "./Transport";
import { Sdk } from "../model/model";
import { Clock } from "../util/TimeUtil";
export declare class SdkHeaderInterceptor implements Transport {
    private readonly sdk;
    private readonly clock;
    private readonly delegate;
    constructor(sdk: Sdk, clock: Clock, delegate: Transport);
    send(request: TransportRequest): Promise<TransportResponse>;
}