+import jalview.datamodel.DBRefEntry;
+import jalview.datamodel.PDBEntry;
+import jalview.datamodel.SequenceI;
+import jalview.jbgui.GStructureChooser;
+import jalview.jbgui.PDBDocFieldPreferences;
+import jalview.structure.StructureSelectionManager;
+import jalview.util.MessageManager;
+import jalview.ws.dbsources.PDBRestClient;
+import jalview.ws.dbsources.PDBRestClient.PDBDocField;
+import jalview.ws.uimodel.PDBRestRequest;
+import jalview.ws.uimodel.PDBRestResponse;
+import jalview.ws.uimodel.PDBRestResponse.PDBResponseSummary;
+