title: Angular 4.3 HttpClient : Intercept response
body: <p>In the documentation about the new <code>HttpClientModule</code> included in the new version of Angular 4.3, the mechanism to intercept requests is explained very well. There is also mention of the response interceptor mechanism however I cannot find anything about it.</p>
  
  <p>Does anyone have an idea about how to intercept a response in order to modify the body message before it is sent to the service?</p>
  
  <p>Thanks.</p>