public function process()
    {
        $this->data = array_values($this->data);

        if (isset($this->data[0])) {
            $data = $this->data;
        } else {
            $data = [$this->data];
        }

        foreach ($data as $key => $value) {
            $model = $this->fill($key, collect($value));
            $this->collection->push($model);
        }

        return $this->collection;
    }