*/
        public function addUser(User $user): Dance {
                //Add from owning side
-               $user->addSubscriber($this);
+               $user->addDance($this);
 
                $this->users[] = $user;
 
         * @return bool
         */
        public function removeUser(User $user): bool {
+               if (!$this->dances->contains($user)) {
+                       return true;
+               }
+
                //Remove from owning side
-               $user->removeSubscriber($this);
+               $user->removeDance($this);
 
                return $this->users->removeElement($user);
        }