docs: public Response removeAttachment(String id, String rev, String attachmentName) {
          assertNotEmpty(id, "id");
          assertNotEmpty(rev, "rev");
          assertNotEmpty(attachmentName, "attachmentName");
          final URI uri = new DatabaseURIHelper(dbUri).attachmentUri(id, rev, attachmentName);
          return couchDbClient.delete(uri);
      }