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: ping.go
    path of file: ./repos/podman/pkg/api/handlers/compat
    
    the code of the file until where you have to start completion: package compat

import (
	"fmt"
	"net/http"
	"runtime"

	"github.com/containers/buildah"
)

// Ping returns headers to client about the service
//
// This handler must always be the same for the compatibility and libpod URL trees!
// Clients will use the Header availability to test which backend engine is in use.
// Note: Additional
    
func Ping(w http.ResponseWriter, r *http.Request) {
	// Note: API-Version and Libpod-API-Version are set in handler_api.go
	w.Header().Set("BuildKit-Version", "")
	w.Header().Set("Builder-Version", "")
	w.Header().Set("Docker-Experimental", "true")
	w.Header().Set("Cache-Control", "no-cache")
	w.Header().Set("OSType", runtime.GOOS)
	w.Header().Set("Pragma", "no-cache")

	w.Header().Set("Libpod-Buildah-Version", buildah.Version)
	w.WriteHeader(http.StatusOK)

	if r.Method == http.MethodGet {
		fmt.Fprint(w, "OK")
	}
}