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