func (u *URL) QueryParam(name string) string {
	return string(u.QueryArgs().Peek(name))
}
QueryParam implements `engine.URL#QueryParam` function.
package fasthttp
import "github.com/valyala/fasthttp"
type (
	URL struct {
		*fasthttp.URI
	}
)
func (u *URL) Path() string {
	return string(u.URI.Path())
}
func (u *URL) SetPath(path string) {
	u.URI.SetPath(path)
}