}

// PrimaryKey returns the index is primary key or not.
func (idx Index) PrimaryKey() (isPrimaryKey bool, ok bool) {
	return idx.PrimaryKeyValue.Bool, idx.PrimaryKeyValue.Valid
}

// Unique returns whether the index is unique or not.
func (idx Index) Unique() (unique bool, ok bool) {
	return idx.UniqueValue.Bool, idx.UniqueValue.Valid
}

// Option return the optional attribute of the index
func (idx Index) Option() string {

// 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.IsZero()
}

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

  // true if async execution is enabled.
  bool async = false;
  TFE_ContextDevicePlacementPolicy device_placement_policy{
      TFE_DEVICE_PLACEMENT_SILENT};
  // If true, use TFRT backend
  bool use_tfrt = false;
  // Whether to run elementary eager ops wrapped in a call op.
  bool run_eager_op_as_function = false;
  // Whether to rewrite jit_compile functions.
  bool jit_compile_rewrite = false;
};

	cmdline string
	layout  [][]string
}

type disksLayout struct {
	legacy bool
	pools  []poolDisksLayout
}

type serverCtxt struct {
	JSON, Quiet               bool
	Anonymous                 bool
	StrictS3Compat            bool
	Addr, ConsoleAddr         string
	ConfigDir, CertsDir       string
	configDirSet, certsDirSet bool
	Interface                 string

	RootUser, RootPwd string

	ResyncTimestamp       string
	ReplicationResynced   bool // true only if resync attempted for this target
	endpoint              string
	secure                bool
	Err                   error // replication error if any
}

// Empty returns true for a target if arn is empty
func (rt replicatedTargetInfo) Empty() bool {
	return rt.Arn == ""
}

type replicatedInfos struct {

// Contains returns whether *all* flags in other is present in t.
func (t Mask) Contains(other Mask) bool {
	return t&other == other
}

// Overlaps returns whether *any* flags in t overlaps with other.
func (t Mask) Overlaps(other Mask) bool {
	return t&other != 0
}

// SingleType returns whether t has a single type set.
func (t Mask) SingleType() bool {
	return bits.OnesCount64(uint64(t)) == 1
}

// Interface for elasticsearch client objects
type esClient interface {
	isAtleastV7() bool
	createIndex(ElasticsearchArgs) error
	ping(context.Context, ElasticsearchArgs) (bool, error)
	stop()
	entryExists(context.Context, string, string) (bool, error)
	removeEntry(context.Context, string, string) error
	updateEntry(context.Context, string, string, event.Event) error

pkg net/http, method (*ResponseController) EnableFullDuplex() error #57786
pkg net/http, var ErrSchemeMismatch error #44855
pkg net, method (*Dialer) MultipathTCP() bool #56539
pkg net, method (*Dialer) SetMultipathTCP(bool) #56539
pkg net, method (*ListenConfig) MultipathTCP() bool #56539
pkg net, method (*ListenConfig) SetMultipathTCP(bool) #56539
pkg net, method (*TCPConn) MultipathTCP() (bool, error) #59166

)

// ReaderArgs - represents elements inside <InputSerialization><JSON/> in request XML.
type ReaderArgs struct {
	ContentType string `xml:"Type"`
	unmarshaled bool
}

// IsEmpty - returns whether reader args is empty or not.
func (args *ReaderArgs) IsEmpty() bool {
	return !args.unmarshaled
}

// UnmarshalXML - decodes XML data.
func (args *ReaderArgs) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {

		return token, -1
	}
	subToken = token[:i]
	return subToken, nodeIndex
}

func proxyRequestByToken(ctx context.Context, w http.ResponseWriter, r *http.Request, token string, returnErr bool) (subToken string, proxied bool, success bool) {
	var nodeIndex int
	if subToken, nodeIndex = parseRequestToken(token); nodeIndex >= 0 {
		proxied, success = proxyRequestByNodeIndex(ctx, w, r, nodeIndex, returnErr)
	}