callables = $callables; } public function contains($id, array $options = null) { return call_user_func($this->callables['contains'], $id, $options); } public function delete($id, array $options = null) { return call_user_func($this->callables['delete'], $id, $options); } public function fetch($id, array $options = null) { return call_user_func($this->callables['fetch'], $id, $options); } public function save($id, $data, $lifeTime = false, array $options = null) { return call_user_func($this->callables['save'], $id, $data, $lifeTime, $options); } }