public final class RtmStartResponse {
  HttpUrl url;
  Object self;
  Object team;
  List<Object> users;
  List<Object> channels;
  List<Object> groups;
  List<Object> mpims;
  List<Object> ims;
  List<Object> bots;

}

func checkIfModifiedSince(r *Request, modtime time.Time) condResult {
	if r.Method != "GET" && r.Method != "HEAD" {
		return condNone
	}
	ims := r.Header.Get("If-Modified-Since")
	if ims == "" || isZeroTime(modtime) {
		return condNone
	}
	t, err := ParseTime(ims)
	if err != nil {
		return condNone
	}
	// The Last-Modified header truncates sub-second precision so
	// the modtime needs to be truncated too.

				"application/vnd.ms-excel.sheet.macroenabled.12",
				"application/vnd.ms-excel.sheet.binary.macroenabled.12",
				"application/vnd.ms-fontobject",
				"application/vnd.ms-htmlhelp",
				"application/vnd.ms-ims",
				"application/vnd.ms-lrm",
				"application/vnd.ms-outlook",
				"application/vnd.ms-outlook-pst",
				"application/vnd.ms-pki.seccat",
				"application/vnd.ms-pki.stl",

    <glob pattern="*.chm"/>
    <magic priority="50">
      <match value="ITSF" type="string" offset="0"/>
    </magic>
  </mime-type>
  <mime-type type="application/vnd.ms-ims">
    <glob pattern="*.ims"/>
  </mime-type>
  <mime-type type="application/vnd.ms-lrm">
    <glob pattern="*.lrm"/>
  </mime-type>

  <mime-type type="application/vnd.ms-outlook">