func (r *Response) SetWriter(w http.ResponseWriter) {
	r.ResponseWriter = w
}
SetWriter sets the provided writer as the new *Response http.ResponseWriter
package lars
import (
	"bufio"
	"io"
	"log"
	"net"
	"net/http"
)
type Response struct {
	http.ResponseWriter
	status    int
	size      int64
	committed bool
	context   Context
}
func newResponse(w http.ResponseWriter, context Context) *Response {
	return &Response{ResponseWriter: w, context: context}
}