-import java.io.IOException;
-import java.util.Enumeration;
-import java.util.Hashtable;
-import java.util.Vector;
-
-import jalview.analysis.NJTree;
-import jalview.analysis.SequenceIdMatcher;
-import jalview.bin.Cache;
+import jalview.analysis.TreeBuilder;
+import jalview.analysis.TreeModel;
+import jalview.bin.Console;