File file = File.createTempFile( "managedbtreebuilder", ".data" );
file.deleteOnExit();
RecordManager rm = new RecordManager( file.getAbsolutePath() );
IntSerializer ser = new IntSerializer();
ManagedBTreeBuilder<Integer, Integer> bb = new ManagedBTreeBuilder<Integer, Integer>( rm, "master", 4, ser, ser );
// contains 1, 2, 3, 4, 5, 6, 7
BTree<Integer, Integer> btree = bb.build( sortedTuple.iterator() );