class RepoRepository extends Repository {
    // TODO: cache all of the GitRepositories within the class

    private static final long serialVersionUID = 1L;
    /**
     * The property name used to obtain the client command for this repository.
     */
    public static final String CMD_PROPERTY_KEY = "org.opengrok.indexer.history.repo";
    /**
     * The command to use to access the repository if none was given explicitly.
     */
    public static final String CMD_FALLBACK = "repo";

    public RepoRepository() {
        type = "repo";
        setWorking(Boolean.TRUE);

        ignoredDirs.add(".repo");
    }

    @Override
    public boolean isWorking() {
        ensureCommand(CMD_PROPERTY_KEY, CMD_FALLBACK);
        return true;
    }

    @Override
    boolean isRepositoryFor(File file, CommandTimeoutType cmdType) {<FILL_FUNCTION_BODY>}

    @Override
    boolean supportsSubRepositories() {
        return true;
    }

    @Override
    boolean fileHasHistory(File file) {
        return false;
    }

    @Override
    boolean hasHistoryForDirectories() {
        return false;
    }

    @Override
    History getHistory(File file) {
        throw new UnsupportedOperationException("Should never be called!");
    }

    @Override
    boolean getHistoryGet(OutputStream out, String parent, String basename, String rev) {
        throw new UnsupportedOperationException("Should never be called!");
    }

    @Override
    boolean fileHasAnnotation(File file) {
        return false;
    }

    @Override
    Annotation annotate(File file, String revision) {
        throw new UnsupportedOperationException("Should never be called!");
    }

    @Override
    String determineParent(CommandTimeoutType cmdType) throws IOException {
        return null;
    }

    @Override
    String determineBranch(CommandTimeoutType cmdType) {
        return null;
    }

    @Override
    String determineCurrentVersion(CommandTimeoutType cmdType) throws IOException {
        return null;
    }
}

        if (file.isDirectory()) {
            File f = new File(file, ".repo");
            return f.exists() && f.isDirectory();
        }
        return false;
    
<methods>public final java.lang.String determineBranch() throws java.io.IOException,public final java.lang.String determineCurrentVersion() throws java.io.IOException,public final java.lang.String determineParent() throws java.io.IOException,public static java.lang.String format(java.util.Date) ,public boolean getHistoryGet(java.io.File, java.lang.String, java.lang.String, java.lang.String) throws java.io.IOException,public java.io.InputStream getHistoryGet(java.lang.String, java.lang.String, java.lang.String) ,public List<java.lang.String> getIgnoredDirs() ,public List<java.lang.String> getIgnoredFiles() ,public org.opengrok.indexer.history.HistoryEntry getLastHistoryEntry(java.io.File, boolean) throws org.opengrok.indexer.history.HistoryException,public java.lang.String getRepoCommand() ,public final boolean isRepositoryFor(java.io.File) ,public java.util.Date parse(java.lang.String) throws java.text.ParseException<variables>private static final java.util.logging.Logger LOGGER,protected static final java.text.SimpleDateFormat OUTPUT_DATE_FORMAT,protected java.lang.String RepoCommand,protected final non-sealed List<java.lang.String> ignoredDirs,protected final non-sealed List<java.lang.String> ignoredFiles,private static final long serialVersionUID,protected NavigableSet<org.opengrok.indexer.history.TagEntry> tagList