src/Jobs/Collection.php
public function completed(int $offset = 0, int $count = 25)
    {
        return $this->client->jobs('complete', null, $offset, $count);
    }
public function completed(int $offset = 0, int $count = 25)
    {
        return $this->client->jobs('complete', null, $offset, $count);
    }
Return a paginated list of JIDs which are in a completed state

@param  int $offset
@param  int $count
@return string[]