+import jalview.datamodel.PDBEntry;
+import jalview.datamodel.SequenceI;
+import jalview.gui.AlignFrame;
+import jalview.gui.AlignViewport;
+import jalview.gui.ChimeraViewFrame;
+import jalview.gui.JalviewChimeraBindingModel;
+import jalview.io.DataSourceType;
+import jalview.io.FileLoader;
+import jalview.structure.StructureCommandI;
+import jalview.structure.StructureMapping;
+import jalview.structure.StructureSelectionManager;