/**
* checks a enum element
*
* @param mixed $value
* @param mixed $schema
* @param mixed $path
* @param mixed $i
*/
protected function checkEnum($value, $schema = null, $path = null, $i = null)
{
$validator = new Enum($this->checkMode);
$validator->check($value, $schema, $path, $i);
$this->addErrors($validator->getErrors());
}