protected function checkEmpty($name, array $node, $data)
{
if (($data === '0' || $data === 0 || $data === 0.0) && isset($node[$this->schema_validator->getFullName('not_empty')]) && $node[$this->schema_validator->getFullName('not_empty')]) {
throw new NodeValidatorException($name, "The node '{$name}' can not be empty");
}
}