// If the request has no body with content-length set to 0,
	// we do not have to validate location constraint. Bucket will
	// be created at default region.
	locationConstraint := createBucketLocationConfiguration{}
	err := xmlDecoder(r.Body, &locationConstraint, r.ContentLength)
	if err != nil && r.ContentLength != 0 {
		internalLogOnceIf(GlobalContext, err, "location-constraint-xml-parsing")

		"userid":           {username},
		"username":         {username},
		"versionid":        {vid},
		"signatureversion": {signatureVersion},
		"authType":         {authtype},
	}

	if lc != "" {
		args["LocationConstraint"] = []string{lc}
	}

	cloneHeader := r.Header.Clone()
	if v := cloneHeader.Get("x-amz-signature-age"); v != "" {
		args["signatureAge"] = []string{v}
		cloneHeader.Del("x-amz-signature-age")
	}

)

// LocationResponse - format for location response.
type LocationResponse struct {
	XMLName  xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ LocationConstraint" json:"-"`
	Location string   `xml:",chardata"`
}

// PolicyStatus captures information returned by GetBucketPolicyStatusHandler
type PolicyStatus struct {