public function fullFetch($uSNChangedTo)
    {
        $searchFilter = Filter::andFilter(
            Filter::greaterOrEqual('uSNChanged', 0),
            Filter::lessOrEqual('uSNChanged', $uSNChangedTo)
        );

        if ($this->fullSyncEntryFilter) {
            $searchFilter = $searchFilter->addAnd($this->fullSyncEntryFilter);
        }

        $entries = $this->search($searchFilter);

        return $entries;
    }