func NewServerMux(indexHandler *IndexHandler, staticHandler http.Handler) *ServerMux {
	return &ServerMux{
		indexHandler:  indexHandler,
		staticHandler: staticHandler,
	}
}
NewServerMux method creates a new instance of ServerMux.
package httpserver
import "net/http"
type ServerMux struct {
	indexHandler  *IndexHandler
	staticHandler http.Handler
}