code: public ApiResponse<Void> subscribeWithHttpInfo() throws ApiException {
          com.squareup.okhttp.Call call = subscribeValidateBeforeCall(null, null);
          return apiClient.execute(call);
      }
docs: CometD subscribe to channel
  CometD handshake, see https://docs.cometd.org/current/reference/#_bayeux_meta_subscribe  Current channels:  &lt;b&gt;/statistics/v3/service&lt;/b&gt; - information about service state  &lt;b&gt;/statistics/v3/updates&lt;/b&gt; - statistics updates
  @return ApiResponse&lt;Void&gt;
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body