AppserverIo\Appserver\Core\Api\Node\ParamNode::castToType PHP Method

    public function castToType()
    {
        // load the params value
        $value = $this->getNodeValue()->__toString();
        // query whether or not we've an environment variable and/or a constant
        $this->isEnv() ? $value = getenv($value) : $value;
        $this->isConstant() ? $value = constant($value) : $value;
        // query the parameters type
        switch ($type = $this->getType()) {
            case 'bool':
            case 'boolean':
                // bool + boolean needs custom handling
                $value = Boolean::valueOf(new String($value))->booleanValue();
                break;
            default:
                // all other can go the same way
                settype($value, $type);
        }
        // return the value
        return $value;
    }