String s = derivedProperty.propertyName(); sb.append(s).append(" | ");
if(derivedProperty != null) { sb.append(derivedProperty.propertyName()); } else { sb.append("null"); } sb.append("|");
    public String toString() {        StringBuffer sb = new StringBuffer();        for (int i = 0; i < _derivedPropertiesById.length; i++) {            DerivedProperty derivedProperty = _derivedPropertiesById[i];            String s = derivedProperty.propertyName();            sb.append(s).append(" | ");        }        return sb.toString();    }