* @return Location
         */
        public function addUser(User $user): Location {
+               //Add from owning side
+               $user->addSubscriber($this);
+
                $this->users[] = $user;
 
                return $this;
         * @return bool
         */
        public function removeUser(User $user): bool {
+               //Remove from owning side
+               $user->removeSubscriber($this);
+
                return $this->users->removeElement($user);
        }