@Deprecated()
  void handleResponse(
      CompletableFuture<Object> resultFuture,
      String configKey,
      Response response,
      Type returnType,
      long elapsedTime) {
    try {
      resultFuture.complete(
          this.responseHandler.handleResponse(configKey, response, returnType, elapsedTime));
    } catch (Exception e) {
      resultFuture.completeExceptionally(e);
    }
  }
@deprecated use {@link #handleResponse(String, Response, Type, long)} instead.
core/src/main/java/feign/AsyncResponseHandler.java