stats.put("process", getProcessObj());
        stats.put("engine", getEngineObj());
        stats.put("fs", getFsObj());
        return asJson(new ApiStatsResponse().stats(stats).status(ApiResult.Status.OK).result());
    }

    private FsObj[] getFsObj() {
        return Arrays.stream(File.listRoots()).map(f -> {
            final FsObj fsObj = new FsObj();
            fsObj.path = f.getAbsolutePath();

func (x xlMetaV2) listFreeVersions(volume, path string) ([]FileInfo, error) {
	fivs, err := x.ListVersions(volume, path, true)
	if err != nil {
		return nil, err
	}
	n := 0
	for _, fiv := range fivs {
		if fiv.TierFreeVersion() {
			fivs[n] = fiv
			n++
		}
	}
	fivs = fivs[:n]
	return fivs, nil
}

func TestFreeVersion(t *testing.T) {
	fatalErr := func(err error) {
		t.Helper()
		if err != nil {
			t.Fatal(err)

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "duplicate_host";
    }

    @Override
    public String xgetAliasName() {
        return "duplicate_host";
    }

    // ===================================================================================

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "elevate_word";
    }

    @Override
    public String xgetAliasName() {
        return "elevate_word";
    }

    // ===================================================================================

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "click_log";
    }

    @Override
    public String xgetAliasName() {
        return "click_log";
    }

    // ===================================================================================

        ComponentUtil.getWebApiManagerFactory().add(this);
    }

    @Override
    public boolean matches(final HttpServletRequest request) {
        final String servletPath = request.getServletPath();
        return servletPath.startsWith(pathPrefix);
    }

    @Override
    public void process(final HttpServletRequest request, final HttpServletResponse response, final FilterChain chain)

    public boolean isFlagSet(int flag) {
        return (flags & flag) == flag;
    }
    public void unsetFlag(int flag) {
        flags &= ~flag;
    }
    public void setFlag(int flag) {
        flags |= flag;
    }
    public DcerpcException getResult() {
        if (result != 0)
            return new DcerpcException(result);
        return null;
    }

    void encode_header(NdrBuffer buf) {

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "path_mapping";
    }

    @Override
    public String xgetAliasName() {
        return "path_mapping";
    }

    // ===================================================================================

    E connectingEdge = getConnectingEdge();
    return (connectingEdge == null)
        ? ImmutableSet.<E>of().iterator()
        : Iterators.singletonIterator(connectingEdge);
  }

  @Override
  public int size() {
    return getConnectingEdge() == null ? 0 : 1;
  }

  @Override
  public boolean contains(@CheckForNull Object edge) {
    E connectingEdge = getConnectingEdge();

        this.argTypes = argTypes;
    }

    /**
     * ターゲットクラスを返します。
     *
     * @return ターゲットクラス
     */
    public Class<?> getTargetClass() {
        return targetClass;
    }

    /**
     * 引数型の並びを返します。
     *
     * @return 引数型の並び
     */
    public Class<?>[] getArgTypes() {
        return argTypes;
    }