@Test
public void testIsIndexed() {

    TableImpl<Node> table = new TableImpl<Node>(Node.class, true);
    Column col1 = table.addColumn("Id", null, Integer.class, Origin.DATA, null, false);
    Column col2 = table.addColumn("1", null, Integer.class, Origin.DATA, null, true);
    Assert.assertFalse(col1.isIndexed());
    Assert.assertTrue(col2.isIndexed());
}