使JGit显示嵌套存储库中的更改

Question

有没有办法像所有其他更改一样处理子存储库中的更改？在命令行上我通常会这样做：

git add subrepo/

但这似乎不适用于JGit ......

编辑： 这是我尝试过的一些代码。 displayStatus方法类似于https://github.com/centic9/jgit-cookbook/blob/master/src/main/java/org/dstadler/jgit/porcelain/ShowStatus.java

public void testSubmoduleHandling(File worktree)
{
    Repository repository = null;
    Repository subrepo = null;

    try
    {
        worktree.mkdir();

        File file;

        String filename1 = "file1";
        filename1 = TranscodeHelper.convertJavaToShell(filename1);
        file = new File(worktree, filename1);
        file.createNewFile();

        String filename2 = "file2";
        filename2 = TranscodeHelper.convertJavaToShell(filename2);
        file = new File(worktree, filename2);
        file.createNewFile();

        String subworktreename = "subrepo";
        subworktreename = TranscodeHelper.convertJavaToShell(subworktreename);
        File subworktree = new File(worktree, subworktreename);
        subworktree.mkdir();

        String subfilename1 = "subfile1";
        subfilename1 = TranscodeHelper.convertJavaToShell(subfilename1);
        File subfile1 = new File(subworktree, subfilename1);
        subfile1.createNewFile();

        repository = createNewRepoAt(worktree);
        Git git = new Git(repository);

        subrepo = createNewRepoAt(subworktree);
        Git subgit = new Git(subrepo);

        subgit.add().addFilepattern(subfilename1);
        subgit.commit().setCommitter(ich).setAuthor(ich).setMessage("Erstcommit").call();

        git.add().addFilepattern(subworktreename + "/");
        git.commit().setCommitter(ich).setAuthor(ich).setMessage("Subrepo").call();
        //          git.add().addFilepattern(".").call();
        //          git.commit().setCommitter(ich).setAuthor(ich).setMessage("Full").call();

        String subfilename2 = "subfile2";
        subfilename2 = TranscodeHelper.convertJavaToShell(subfilename2);
        File subfile2 = new File(subworktree, subfilename2);
        subfile2.createNewFile();

        displayStatus(git, "Nach Erstcommits");
    }
    catch (Exception e)
    {
        ctx.out().println(e.getClass().getName());
        ctx.out().println(e);
        throw new RuntimeException(e);
    }
    finally
    {
        if (repository != null) repository.close();
        if (subrepo != null) subrepo.close();
        try
        {
            //FileUtils.deleteDirectory(worktree);
        }
        catch (Exception e)
        {
        }
    }