Wrong doctype return values

[samuelwei]

Inside the php doctypes the return type of some getter is string or int only, however the value is initialized with null

Example

CreateMeetingParameters

...
 * @method string    getWelcome()
 * @method $this     setWelcome(string $welcome)
...
 * @method int       getDuration()
 * @method $this     setDuration(int $duration)
...
    protected ?string $welcome = null;
...
    protected ?int $duration = null;
...