+import gr.grnet.pithos.web.client.foldertree.File;
+import gr.grnet.pithos.web.client.foldertree.Folder;
+import gr.grnet.pithos.web.client.foldertree.Resource;
+import gr.grnet.pithos.web.client.rest.DeleteRequest;
+import gr.grnet.pithos.web.client.rest.GetRequest;
+import gr.grnet.pithos.web.client.rest.RestException;