HttpHeaderResponse

  
    class HttpHeaderResponse extends HttpResponseBase {  readonly type: HttpEventType.ResponseHeader;  clone(update?: { headers?: HttpHeaders | undefined; status?: number | undefined; statusText?: string | undefined; url?: string | undefined; }): HttpHeaderResponse;  readonly override headers: HttpHeaders;  readonly override status: number;  readonly override statusText: string;  readonly override url: string | null;  readonly override ok: boolean;}