public void SetUp()
 {
     _retriever = Substitute.For <IAttachmentRetriever>();
     AttachmentRetrieverSettings.AttachmentRetrieverType   = AttachmentRetrieverType.Custom;
     AttachmentRetrieverSettings.CustomAttachmentRetriever = _retriever;
 }
 public DefaultAttachmentExtractor()
 {
     _attachmentRetriever = AttachmentRetrieverFactory.GetAttachmentRetriever();
 }