// ParseTree parses a formatted tree root description.
func ParseTree(text []byte) (tree Tree, err error) {
	// The message looks like:
	//
	//	go.sum database tree
	//	2
	//	nND/nri/U0xuHUrYSy0HtMeal2vzD9V4k/BO79C+QeI=
	//
	// For forwards compatibility, extra text lines after the encoding are ignored.
	if !bytes.HasPrefix(text, treePrefix) || bytes.Count(text, []byte("\n")) < 3 || len(text) > 1e6 {

  <mime-type type="application/vnd.neurolanguage.nlu">
    <glob pattern="*.nlu"/>
  </mime-type>
  <mime-type type="application/vnd.noblenet-directory">
    <glob pattern="*.nnd"/>
  </mime-type>
  <mime-type type="application/vnd.noblenet-sealer">
    <glob pattern="*.nns"/>
  </mime-type>
  <mime-type type="application/vnd.noblenet-web">
    <glob pattern="*.nnw"/>