@Test
public void simpleAction() {

    final AtomicBoolean calledBack = new AtomicBoolean( false );
    final ActionRetractFactCol52 arf = new ActionRetractFactCol52();
    model.getActionCols().add( arf );
    builder.generateDefinition( dtPresenter,
                                arf,
                                ( String definition ) -> {
                                    calledBack.set( true );
                                    assertEquals( "retract( x );",
                                                  definition );
                                } );
    assertTrue( calledBack.get() );
}