bcast.go
func (g *Group) Send(val interface{}) {
	g.in <- Message{sender: nil, payload: val}
}
func (g *Group) Send(val interface{}) {
	g.in <- Message{sender: nil, payload: val}
}
func ( g * Group ) Send ( val interface { } ) { g . in <- Message { sender : nil , payload : val } }
// Send broadcasts a message to every one of a Group's members.
Send broadcasts a message to every one of a Group s members .