+import jalview.analysis.Conservation;
+import jalview.analysis.TreeModel;
+import jalview.api.AlignViewportI;
+import jalview.bin.Console;
+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.Annotation;
+import jalview.datamodel.BinaryNode;
+import jalview.datamodel.ColumnSelection;
+import jalview.datamodel.ContactMatrixI;
+import jalview.datamodel.HiddenColumns;
+import jalview.datamodel.Sequence;
+import jalview.datamodel.SequenceGroup;
+import jalview.datamodel.SequenceI;
+import jalview.datamodel.SequenceNode;
+import jalview.gui.JalviewColourChooser.ColourChooserListener;
+import jalview.schemes.ColourSchemeI;
+import jalview.structure.SelectionSource;
+import jalview.util.ColorUtils;
+import jalview.util.Format;
+import jalview.util.MessageManager;
+import jalview.ws.datamodel.MappableContactMatrixI;
+