code: public function remove($member, ...$members): int
      {
          array_unshift($members, $member);
  
          return $this->redis->srem($this->key, $this->serializeArray($members));
      }
docs: @param mixed $member     First member that's removed from the list.
  @param mixed ...$members More members to remove.
  
  @return int Amount of members removed from set. Does not include non-existing members given in $members.