Controller/WebhookController.php
protected function getContentTypes($spaceId)
    {
        $ctypes = new ArrayCollection();
        foreach ($this->contentTypeRepo->findAllBySpaceId($spaceId) as $c) {
            $ctypes->set($c->getId(), $c);
        }
        return $ctypes;
    }
protected function getContentTypes($spaceId)
    {
        $ctypes = new ArrayCollection();
        foreach ($this->contentTypeRepo->findAllBySpaceId($spaceId) as $c) {
            $ctypes->set($c->getId(), $c);
        }
        return $ctypes;
    }
@param string $spaceId

@return ArrayCollection|ContentfulContentType[]