public function setSortBy($sortBy = null)
{
// validation for constraint: enumeration
if (!\Api\EnumType\ApiVideoSortOption::valueIsValid($sortBy)) {
throw new \InvalidArgumentException(sprintf('Value "%s" is invalid, please use one of: %s', $sortBy, implode(', ', \Api\EnumType\ApiVideoSortOption::getValidValues())), __LINE__);
}
$this->SortBy = $sortBy;
return $this;
}