fmt.Sprintf("client_id=%s", testApp.ClientID),
			fmt.Sprintf("client_secret=%s", testApp.ClientSecret),
			"scopes=openid,groups",
			fmt.Sprintf("redirect_uri=%s", testApp.RedirectURL),
		}
		if rolePolicies[i] != "" {
			configCmds = append(configCmds, fmt.Sprintf("role_policy=%s", rolePolicies[i]))
		} else {
			configCmds = append(configCmds, "claim_name=groups")

{"request":{"uri":"/2","header":{}}}`,
		},
		{
			name:  "is-not-missing-2",
			query: `select * from s3object[*] as s where s.request.header is not missing`,
			wantResult: `{"request":{"uri":"/1","header":{"User-Agent":"test"}}}
{"request":{"uri":"/2","header":{}}}`,
			withJSON: `{"request":{"uri":"/1","header":{"User-Agent":"test"}}}
{"request":{"uri":"/2","header":{}}}`,
		},
		{

	// Get signed headers.
	signedHeaders := strings.Join(headers, ";")

	// Get canonical query string.
	req.URL.RawQuery = strings.ReplaceAll(req.URL.Query().Encode(), "+", "%20")

	// Get canonical URI.
	canonicalURI := s3utils.EncodePath(req.URL.Path)

	// Get canonical request.
	// canonicalRequest =
	//  <HTTPMethod>\n
	//  <CanonicalURI>\n
	//  <CanonicalQueryString>\n
	//  <CanonicalHeaders>\n

```
KEY:
notify_mqtt[:name]  publish bucket notifications to MQTT endpoints

ARGS:
broker*              (uri)       MQTT server endpoint e.g. `tcp://localhost:1883`
topic*               (string)    name of the MQTT topic to publish
username             (string)    MQTT username
password             (string)    MQTT password