You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: server.go
    path of file: ./repos/podman/vendor/github.com/go-openapi/runtime/middleware/denco
    
    the code of the file until where you have to start completion: package denco

import (
	"net/http"
)

// Mux represents a multiplexer for HTTP request.
type Mux struct{}

// NewMux returns a new Mux.
func NewMux() *Mux {
	return &Mux{}
}

// GET is
    
func (mux *serveMux) handler(method, path string) (HandlerFunc, []Param) {
	if router, found := mux.routers[method]; found {
		if handler, params, found := router.Lookup(path); found {
			return handler.(HandlerFunc), params
		}
	}
	return NotFound, nil
}