servers/simple.go
func (s *Simple) SetAddr(addr string) {
	if s.Server.Addr == "" {
		s.Server.Addr = addr
	}
}
func (s *Simple) SetAddr(addr string) {
	if s.Server.Addr == "" {
		s.Server.Addr = addr
	}
}
func ( s * Simple ) SetAddr ( addr string ) { if s . Server . Addr == " " { s . Server . Addr = addr } }
// SetAddr sets the servers address, if it hasn't already been set
SetAddr sets the servers address if it hasn t already been set