}

func extractMetadata(ctx context.Context, mimesHeader ...textproto.MIMEHeader) (metadata map[string]string, err error) {
	metadata = make(map[string]string)

	for _, hdr := range mimesHeader {
		// Extract all query values.
		err = extractMetadataFromMime(ctx, hdr, metadata)
		if err != nil {
			return nil, err
		}
	}

	// Set content-type to default value if it is not set.

		if h.Get(xhttp.AmzChecksumType) == xhttp.AmzChecksumTypeFullObject {
			if !t.CanMerge() {
				return ChecksumInvalid, ""
			}
			t |= ChecksumFullObject
		}
		if t.IsSet() {
			hdr := t.Key()
			if s = h.Get(hdr); s == "" {
				return ChecksumNone, ""
			}
		}
		return t, s
	}
	checkType := func(c ChecksumType) {
		if got := h.Get(c.Key()); got != "" {
			// If already set, invalid

		}) {
			t.Errorf("Contents not sorted")
		}
		for i := range xl.versions {
			hdr := xl.versions[i].header
			ver, err := xl.getIdx(i)
			if err != nil {
				t.Error(err)
				continue
			}
			gotHdr := ver.header()
			if hdr != gotHdr {
				t.Errorf("Header does not match, index: %+v != meta: %+v", hdr, gotHdr)
			}
		}
	}
	t.Run("load-legacy", func(t *testing.T) {
		var xl xlMetaV2

			}
		})
	}
}

func TestFSWalkBadFile(t *testing.T) {
	t.Parallel()

	var buf bytes.Buffer
	zw := NewWriter(&buf)
	hdr := &FileHeader{Name: "."}
	hdr.SetMode(fs.ModeDir | 0o755)
	w, err := zw.CreateHeader(hdr)
	if err != nil {
		t.Fatalf("create zip header: %v", err)
	}
	_, err = w.Write([]byte("some data"))
	if err != nil {
		t.Fatalf("write zip contents: %v", err)

				"text/vnd.trolltech.linguist",
				"text/vnd.wap.si",
				"text/vnd.wap.sl",
				"text/vnd.wap.wml",
				"text/vnd.wap.wmlscript",
				"text/x-awk",
				"text/x-basic",
				"text/x-c++hdr",
				"text/x-c++src",
				"text/x-cgi",
				"text/x-chdr",
				"text/x-clojure",
				"text/x-coffeescript",
				"text/x-csrc",
				"text/x-csharp",
				"text/x-cobol",
				"text/x-coldfusion",

  <mime-type type="application/edi-x12"/>
  <mime-type type="application/edifact"/>
  <mime-type type="application/emma+xml">
    <glob pattern="*.emma"/>
  </mime-type>
  <mime-type type="application/envi.hdr">
    <glob pattern="*.hdr"/>
  </mime-type>
  <mime-type type="application/epp+xml"/>

  <mime-type type="application/epub+zip">
    <acronym>EPUB</acronym>
    <_comment>Electronic Publication</_comment>