@Override
 protected void sendTest3XcapRequest() throws IOException, URISyntaxException {
   // delete attribute
   XcapResponse deleteResponse =
       client.delete(
           getAttributeXcapURI(), getAssertedUserIdHeaders(client.getHeaderFactory(), user), null);
   assertTrue("Delete response must exists", deleteResponse != null);
   System.out.print(deleteResponse.toString());
   assertTrue("Delete response code should be 200", deleteResponse.getCode() == 200);
   // set previous etag
   previousEtag = newEtag;
   newEtag = deleteResponse.getETag();
 }
 @Override
 protected void sendTest2XcapRequest() throws IOException, URISyntaxException {
   // replace attribute
   String attr = "sip:[email protected]";
   XcapResponse putResponse =
       client.put(
           getAttributeXcapURI(),
           "application/xcap-att+xml",
           attr,
           getAssertedUserIdHeaders(client.getHeaderFactory(), user),
           null);
   assertTrue("Put response must exists", putResponse != null);
   System.out.print(putResponse.toString());
   assertTrue(
       "Put response code should be 201, instead it is " + putResponse.getCode(),
       putResponse.getCode() == 201);
   // set etags
   previousEtag = newEtag;
   newEtag = putResponse.getETag();
 }