code: public function init()
      {
          $this->pluginClient = new PluginClient(
              $this->httpClient ?: HttpClientDiscovery::find(),
              $this->plugins
          );
  
          $this->client = new HttpMethodsClient(
              $this->pluginClient,
              $this->messageFactory ?: MessageFactoryDiscovery::find()
          );
      }
docs: Initialises the HttpClient
  
  @return void