Neos\Flow\Mvc\Controller\Arguments::validateArgumentExistence PHP Method

validateArgumentExistence() protected method

If an argument with the specified name or short name does not exist, an empty string is returned.
protected validateArgumentExistence ( string $argumentName ) : string
$argumentName string argument name
return string long argument name or empty string
    protected function validateArgumentExistence($argumentName)
    {
        if (in_array($argumentName, $this->getArgumentNames())) {
            return $argumentName;
        }
        return false;
    }