*io.PipeWriter
	once sync.Once
	done func()
}

// CloseWithError close with supplied error the writer end.
func (w *PipeWriter) CloseWithError(err error) error {
	err = w.PipeWriter.CloseWithError(err)
	w.once.Do(func() {
		w.done()
	})
	return err
}

// PipeReader is similar to io.PipeReader with wait group
type PipeReader struct {
	*io.PipeReader
	wait func()
}

	Bucket       string
	Prefix       string
	StorageClass string
}

func (az *warmBackendAzure) tier() *blob.AccessTier {
	if az.StorageClass == "" {
		return nil
	}
	for _, t := range blob.PossibleAccessTierValues() {
		if strings.EqualFold(az.StorageClass, string(t)) {
			return &t
		}
	}
	return nil
}

func (az *warmBackendAzure) getDest(object string) string {
	destObj := object
	if az.Prefix != "" {

	return nil
}

// IsDaysNull returns true if days field is null
func (e Expiration) IsDaysNull() bool {
	return e.Days == ExpirationDays(0)
}

// IsDateNull returns true if date field is null
func (e Expiration) IsDateNull() bool {
	return e.Date.Time.IsZero()
}

// IsNull returns true if both date and days fields are null
func (e Expiration) IsNull() bool {
	return e.IsDaysNull() && e.IsDateNull()

func (c *DeadlineConn) WithReadDeadline(d time.Duration) *DeadlineConn {
	c.readDeadline = d
	return c
}

// WithWriteDeadline sets a new write side net.Conn deadline.
func (c *DeadlineConn) WithWriteDeadline(d time.Duration) *DeadlineConn {
	c.writeDeadline = d
	return c
}

// New - creates a new connection object wrapping net.Conn with deadlines.
func New(c net.Conn) *DeadlineConn {

func (rulesMap RulesMap) add(eventNames []Name, pattern string, targetID TargetID) {
	rules := make(Rules)
	rules.Add(pattern, targetID)

	for _, eventName := range eventNames {
		for _, name := range eventName.Expand() {
			rulesMap[name] = rulesMap[name].Union(rules)
		}
	}
}

// Clone - returns copy of this rules map.
func (rulesMap RulesMap) Clone() RulesMap {

	fillReady chan int64
	readerErr error // underlying reader error, if any
}

func newScanner(r io.Reader) *scanner {
	sr := &scanner{
		end:       maxInt,
		fillReq:   make(chan struct{}),
		fillReady: make(chan int64),
	}

	go func() {
		var rpos int64 // total bytes read into buffer

		defer func() {
			atomic.StoreInt64(&sr.end, rpos)
			close(sr.fillReady)
		}()

		for range sr.fillReq {

	Schema                 *Schema
	EmbeddedSchema         *Schema
	OwnerSchema            *Schema
	ReflectValueOf         func(context.Context, reflect.Value) reflect.Value
	ValueOf                func(context.Context, reflect.Value) (value interface{}, zero bool)
	Set                    func(context.Context, reflect.Value, interface{}) error
	Serializer             SerializerInterface
	NewValuePool           FieldNewValuePool

		t.Fatalf("Build OR condition, but got %v", result.Statement.SQL.String())
	}
}

type Int64 int64

func (v Int64) Value() (driver.Value, error) {
	return v - 1, nil
}

func (f *Int64) Scan(v interface{}) error {
	y := v.(int64)
	*f = Int64(y + 1)
	return nil
}

func TestPluck(t *testing.T) {
	users := []*User{
		GetUser("pluck-user1", Config{}),
		GetUser("pluck-user2", Config{}),

}

// Schema returns the schema of the table.
func (ct TableType) Schema() string {
	return ct.SchemaValue
}

// Name returns the name of the table.
func (ct TableType) Name() string {
	return ct.NameValue
}

// Type returns the type of the table.
func (ct TableType) Type() string {
	return ct.TypeValue
}

// Comment returns the comment of current table.
func (ct TableType) Comment() (comment string, ok bool) {

	json.NewEncoder(w).Encode(res)
	return
}

func main() {
	flag.Parse()
	serveFunc := func() error {
		return http.ListenAndServe(":8080", nil)
	}

	if certFile != "" || keyFile != "" {
		if certFile == "" || keyFile == "" {
			log.Fatal("Please provide both a key file and a cert file to enable TLS.")
		}
		serveFunc = func() error {
			return http.ListenAndServeTLS(":8080", certFile, keyFile, nil)