/**
* Splits this Status object into two new Status objects, one which contains only
* the error messages, and one that contains the warnings, only. The returned array is
* defined as:
* [
* 0 => object(Status) # the Status with error messages, only
* 1 => object(Status) # The Status with warning messages, only
* ]
*
* @return Status[]
*/
public function splitByErrorType()
{
list($errorsOnlyStatus, $warningsOnlyStatus) = parent::splitByErrorType();
$errorsOnlyStatus->cleanCallback = $warningsOnlyStatus->cleanCallback = $this->cleanCallback;
return [$errorsOnlyStatus, $warningsOnlyStatus];
}