query.go
func (q *Query) KeepAlive() *Query {
	q.headers = append(q.headers, "KeepAlive: on")
	q.keepalive = true
	return q
}
func (q *Query) KeepAlive() *Query {
	q.headers = append(q.headers, "KeepAlive: on")
	q.keepalive = true
	return q
}
// KeepAlive keeps the connection open to reuse for additional requests.