TYPO3 Core

I believe it is a good practice to have fluent setters (return type self) for instance in order to have immutable objects. Sure in that case it should be called with*. Nevertheless I don't find it necessary to force void as a return type on AbstractDomainObject->setPid. Also this avoids clean code styles like:

$someService->save((new Entity())->setPid(123));

    /**
     * Setter for the pid.
     *
     * @param int $pid
     */
    public function setPid(int $pid): void
    {
        $this->pid = $pid;
    }

If TYPO3 does not use this i fully understand but at least it should not force void return type, which makes it impossible as an extension developer to have fluent setters apart from creating a different method like setPageUid().

Kind regards and thank you for the great work
Rozbeh Chiryai Sharahi