@Test
 public void removeConnections() {
   SocialUserConnection facebookConnection = insertFacebookConnection();
   insertFacebookConnection2();
   assertThat(socialUserConnectionRepository.findOne(facebookConnection.getId())).isNotNull();
   connectionRepository.removeConnections("facebook");
   assertThat(socialUserConnectionRepository.findOne(facebookConnection.getId())).isNull();
 }
 @Test
 public void removeConnectionsToProviderNoOp() {
   connectionRepository.removeConnections("twitter");
 }