manager

// Manager is an overarching account manager that can communicate with various
// backends for signing transactions.
type Manager struct {
    backends map[reflect.Type][]Backend // Index of backends currently registered
    updaters []event.Subscription       // Wallet update subscriptions for all backends
    updates  chan WalletEvent           // Subscription sink for backend wallet changes
    wallets  []Wallet                   // Cache of all wallets from all registered backends

    feed event.Feed // Wallet feed notifying of arrivals/departures

    quit chan chan error
    lock sync.RWMutex
}