VersionPress\Git\GitLogPaginator::getPage PHP Method

    public function getPage($pageNumber)
    {
        $this->numberOfCommits = $this->repository->getNumberOfCommits($this->query);
        $firstCommitIndex = $pageNumber * $this->commitsPerPage;
        $lastCommitIndex = ($pageNumber + 1) * $this->commitsPerPage;
        if ($lastCommitIndex >= $this->numberOfCommits) {
            $this->isLastPage = true;
        } else {
            $this->isLastPage = false;
        }
        $query = $this->query . ' --skip=' . $firstCommitIndex . ' --max-count=' . $this->commitsPerPage;
        return $this->repository->log($query);
    }

 /**
  * @param WP_REST_Request $request
  * @return WP_REST_Response|\WP_Error
  */
 public function getCommits(WP_REST_Request $request)
 {
     $gitLogPaginator = new GitLogPaginator($this->gitRepository);
     $gitLogPaginator->setCommitsPerPage(25);
     $page = intval($request['page']);
     $commits = $gitLogPaginator->getPage($page);
     if (empty($commits)) {
         return new \WP_Error('notice', 'No more commits to show.', array('status' => 403));
     }
     $preActivationHash = trim(file_get_contents(VERSIONPRESS_ACTIVATION_FILE));
     if (empty($preActivationHash)) {
         $initialCommitHash = $this->gitRepository->getInitialCommit()->getHash();
     } else {
         $initialCommitHash = $this->gitRepository->getChildCommit($preActivationHash);
     }
     $isChildOfInitialCommit = $this->gitRepository->wasCreatedAfter($commits[0]->getHash(), $initialCommitHash);
     $isFirstCommit = $page === 0;
     $result = array();
     foreach ($commits as $commit) {
         $isChildOfInitialCommit = $isChildOfInitialCommit && $commit->getHash() !== $initialCommitHash;
         $canUndoCommit = $isChildOfInitialCommit && !$commit->isMerge();
         $canRollbackToThisCommit = !$isFirstCommit && ($isChildOfInitialCommit || $commit->getHash() === $initialCommitHash);
         $changeInfo = ChangeInfoMatcher::buildChangeInfo($commit->getMessage());
         $isEnabled = $isChildOfInitialCommit || $canRollbackToThisCommit || $commit->getHash() === $initialCommitHash;
         $fileChanges = $this->getFileChanges($commit);
         $changeInfoList = $changeInfo instanceof ChangeInfoEnvelope ? $changeInfo->getChangeInfoList() : array();
         $result[] = array("hash" => $commit->getHash(), "date" => $commit->getDate()->format('c'), "message" => $changeInfo->getChangeDescription(), "canUndo" => $canUndoCommit, "canRollback" => $canRollbackToThisCommit, "isEnabled" => $isEnabled, "isInitial" => $commit->getHash() === $initialCommitHash, "isMerge" => $commit->isMerge(), "changes" => array_merge($this->convertChangeInfoList($changeInfoList), $fileChanges));
         $isFirstCommit = false;
     }
     return new WP_REST_Response(array('pages' => $gitLogPaginator->getPrettySteps($page), 'commits' => $result));
 }