func (nb *NotifyBundle) Listen(n Network, a ma.Multiaddr) {
	if nb.ListenF != nil {
		nb.ListenF(n, a)
	}
}
func (nb *NotifyBundle) Listen(n Network, a ma.Multiaddr) {
	if nb.ListenF != nil {
		nb.ListenF(n, a)
	}
}
func ( nb * NotifyBundle ) Listen ( n Network , a ma . Multiaddr ) { if nb . ListenF != nil { nb . ListenF ( n , a ) } }
// Listen calls ListenF if it is not null.
Listen calls ListenF if it is not null .