class RequestKey {

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((method == null) ? 0 : method.hashCode());
    result = prime * result + ((url == null) ? 0 : url.hashCode());
    return result;
  }

  private  RequestKey(Builder builder);
  private  RequestKey(Request request);

}