/**
* {@inheritDoc}
*/
public function isRequiredExistingClass($className, $suppressException = true)
{
/* Clear the last error. */
$this->lastError = null;
/* If valid just return true. */
if (Validator::isRequiredExistingClass($className)) {
return true;
}
/* Set the error message. */
$this->lastError = sprintf('Expected class name, \'%s\' given.', $className);
return $this->validationFailed($suppressException);
}