Final Class Yiisoft\Proxy\Config\ParameterConfig

                public function __construct(
    /**
     * @var TypeConfig|null Type config. `null` means no type specified.
     */
    public ?TypeConfig $type,
    /**
     * @var string A name without dollar sign (`$`). For example: `previousNodesCount`.
     */
    public string $name,
    /**
     * @var bool Whether the default value available.
     *
     * @link https://www.php.net/manual/en/functions.arguments.php#functions.arguments.default
     */
    public bool $isDefaultValueAvailable,
    /**
     * @var bool|null Whether the default value refers to a constant (when {@see $isDefaultValueAvailable} is
     * `true`}). `null` means no default value specified ({@see $isDefaultValueAvailable} is `false`).
     *
     * @link https://www.php.net/manual/en/language.constants.syntax.php
     */
    public ?bool $isDefaultValueConstant,
    /**
     * @var string|null A constant name for default value (when it's specified, {@see $isDefaultValueAvailable} and
     * {@see $isDefaultValueConstant} must be `true` at the same time). `null` means no default value specified or
     * it's not a constant (either {@see $isDefaultValueAvailable} or {@see $isDefaultValueConstant} is `false`).
     *
     * @link https://www.php.net/manual/en/language.constants.syntax.php
     */
    public ?string $defaultValueConstantName,
    /**
     * @var mixed The actual value specified as default with corresponding type. `null` means no default value (only
     * when {@see $isDefaultValueAvailable} is `false`).
     */
    public mixed $defaultValue,
) {
}

            

                public function hasType(): bool
{
    return $this->type !== null;
}