public function mutateRows(array $rowMutations, array $options = [])
    {
        if (!$this->isAssoc($rowMutations)) {
            throw new \InvalidArgumentException(
                'Expected rowMutations to be of type associative array, instead got list.'
            );
        }
        $entries = [];
        foreach ($rowMutations as $rowKey => $mutations) {
            $entries[] = $this->toEntry($rowKey, $mutations);
        }
        $this->mutateRowsWithEntries($entries, $options);
    }