public function process(StorableInterface $object)
    {
        if (is_array($this->backends) && count($this->backends) > 0) {
            $results = [];

            $identifiers = $object->getStorableBackendIdentifiers();

            foreach ($this->backends as $identifier => $backend) {
                if (in_array($identifier, $identifiers)) {
                    $results[$identifier] = $backend->write($object);
                }
            }

            return $results;
        } else {
            throw new StorageProcessingException(
                sprintf(
                    "Tried to process an storable object '%s' with no backends",
                    $object->getStorableIdentifier()
                )
            );
        }
    }