@Override
 public CommentEntity anInvalidResource() {
   Comment comment =
       theUser(user)
           .commentTheResource(CONTENT_ID)
           .inComponent(COMPONENT_INSTANCE_ID)
           .withAsText("ceci est un commentaire");
   comment.setCommentPK(new CommentPK("3", COMPONENT_INSTANCE_ID));
   return CommentEntity.fromComment(comment);
 }
 @Before
 public void prepareTestResources() {
   user = save(aUser());
   sessionKey = authenticate(user);
   Comment commentToUseInTest =
       theUser(user)
           .commentTheResource(CONTENT_ID)
           .inComponent(COMPONENT_INSTANCE_ID)
           .withAsText("ceci est un commentaire");
   getTestResources().save(commentToUseInTest);
   theComment = CommentEntity.fromComment(commentToUseInTest);
 }