bm := newBucketMetacache("", false)
	const elements = 50000
	const paths = 100
	if elements%paths != 0 {
		b.Fatal("elements must be divisible by the number of paths")
	}
	var pathNames [paths]string
	for i := range pathNames[:] {
		pathNames[i] = fmt.Sprintf("prefix/%d", i)
	}
	for i := 0; i < elements; i++ {
		bm.findCache(listPathOptions{
			ID:           mustGetUUID(),

}

// common - represents common elements inside <QueueConfiguration>, <CloudFunctionConfiguration>
// and <TopicConfiguration>
type common struct {
	ID     string `xml:"Id" json:"Id"`
	Filter S3Key  `xml:"Filter" json:"Filter"`
	Events []Name `xml:"Event" json:"Event"`
}

// Queue - represents elements inside <QueueConfiguration>
type Queue struct {
	common
	ARN ARN `xml:"Queue"`

	// The extended form disables evaluation of . and .. path
	// elements and disables the interpretation of / as equivalent
	// to \. The conversion here rewrites / to \ and elides
	// . elements as well as trailing or duplicate separators. For
	// simplicity it avoids the conversion entirely for relative
	// paths or paths containing .. elements. For now,
	// \\server\share paths are not converted to

		scheme = strings.ToLower(proto)
	} else if proto := r.Header.Get(forwarded); proto != "" {
		// match should contain at least two elements if the protocol was
		// specified in the Forwarded header. The first element will always be
		// the 'for=', which we ignore, subsequently we proceed to look for
		// 'proto=' which should precede right after `for=` if not

	}
	dst.Reset()
	elems, err := r.object.Parse(nil)
	if err != nil {
		return nil, err
	}
	if cap(dst.KVS) < len(elems.Elements) {
		dst.KVS = make(jstream.KVS, 0, len(elems.Elements))
	}
	for _, elem := range elems.Elements {
		v, err := sql.IterToValue(elem.Iter)
		if err != nil {
			v, err = elem.Iter.Interface()
			if err != nil {
				panic(err)
			}
		}

	default:
		return errInvalidCompressionFormat(fmt.Errorf("invalid compression format '%v'", s))
	}

	*c = parsedType
	return nil
}

// InputSerialization - represents elements inside <InputSerialization/> in request XML.
type InputSerialization struct {
	CompressionType CompressionType    `xml:"CompressionType"`
	CSVArgs         csv.ReaderArgs     `xml:"CSV"`

		if _, ok := query[v4PresignQueryParam]; !ok {
			return ErrInvalidQueryParams
		}
	}
	return ErrNone
}

// Parses all the presigned signature values into separate elements.
func parsePreSignV4(query url.Values, region string, stype serviceType) (psv preSignValues, aec APIErrorCode) {
	// verify whether the required query params exist.
	aec = doesV4PresignParamsExist(query)
	if aec != ErrNone {

}

func (e *ListExpr) evalNode(r Record, tableAlias string) (*Value, error) {
	res := make([]Value, len(e.Elements))
	if len(e.Elements) == 1 {
		// If length 1, treat as single value.
		return e.Elements[0].evalNode(r, tableAlias)
	}
	for i, elt := range e.Elements {
		v, err := elt.evalNode(r, tableAlias)
		if err != nil {
			return nil, err
		}
		res[i] = *v
	}

			wantResult: `{"_1":1.5,"_2":2.5}`,
		},
		{
			name:  "limit-1",
			query: `SELECT * FROM S3Object[*].elements[*] LIMIT 1`,
			requestXML: []byte(`
<?xml version="1.0" encoding="UTF-8"?>
<SelectObjectContentRequest>
    <Expression>select * from s3object[*].elements[*] s where s.element_type = '__elem__merfu'</Expression>
    <ExpressionType>SQL</ExpressionType>
    <InputSerialization>

		m["range"] = rangeField
	}

	if _, ok := r.Header[xhttp.MinIOSourceReplicationRequest]; ok {
		m[xhttp.MinIOSourceReplicationRequest] = ""
	}
	return m
}

// Extract response elements to be sent with event notification.
func extractRespElements(w http.ResponseWriter) map[string]string {
	if w == nil {
		return map[string]string{}
	}
	return map[string]string{