Bug 178667 [DataBinding] error message printed to stdout when running test suite
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/scenarios/PropertyScenarios.java
Converter negatgConverter = new Converter(boolean.class, boolean.class) {
            private Boolean negated(Boolean booleanObject) {
                return new Boolean(!booleanObject.booleanValue());
            }
            public Object convert(Object targetObject) {
                return negated((Boolean) targetObject);
            }
        };
        getDbc().bdValue(checkbox1Selected,
                checkbox2Selected,new UpdateValueStrategy().setConverter(negatgConverter),
                new UpdateValueStrategy().setConverter(negatgConverter));
        
        // bd 
        // check
        
        getDbc().bdValue(SWTObservables.observeEnabled(text1), checkbox1Selected, null, null);
        getDbc().bdValue(SWTObservables.observeEnabled(text2), checkbox2Selected, null, null);
                
        assertEquals(true, text1.getEnabled());
        assertEquals(false, text2.getEnabled());
        assertEquals(true, checkbox1.getSelection());
        setButtonSelectionWithEvents(checkbox1, false);
        assertEquals(false, text1.getEnabled());
        assertEquals(true, text2.getEnabled());
        assertEquals(true, checkbox2.getSelection());
        setButtonSelectionWithEvents(checkbox2, false);
        assertEquals(true, text1.getEnabled());
        assertEquals(false, text2.getEnabled());
        assertEquals(true, checkbox1.getSelection());
    }