Controllers\xAPI\BaseController::requiredValue PHP Method

    protected function requiredValue($name, $value, $type)
    {
        $decodedValue = $this->decodeValue($value);
        if (isset($decodedValue)) {
            $this->validateValue($name, $decodedValue, $type);
        } else {
            throw new Exceptions\Exception('Required parameter is missing - ' . $name);
        }
        return $decodedValue;
    }