public final class TestColumnHelper extends TestCase {
public void testCleanColumns() {
CTWorksheet worksheet = CTWorksheet.Factory.newInstance();
CTCols cols1 = worksheet.addNewCols();
CTCol col1 = cols1.addNewCol();
col1.setMin(1);
col1.setMax(1);
col1.setWidth(88);
col1.setHidden(true);