$node->addEquivalentValue(true, $this->trueEquivalent);
$node->addEquivalentValue(false, $this->falseEquivalent);
$node->setRequired($this->required);
$node->addEquivalentValue(true, $this->trueEquivalent);
$node->addEquivalentValue(false, $this->falseEquivalent);
$node->setRequired($this->required);