query.go
func (q *Query) And(n int) *Query {
	q.headers = append(q.headers, fmt.Sprintf("And: %d", n))
	return q
}
func (q *Query) And(n int) *Query {
	q.headers = append(q.headers, fmt.Sprintf("And: %d", n))
	return q
}
func ( q * Query ) And ( n int ) * Query { q . headers = append ( q . headers , fmt . Sprintf ( " " , n ) ) return q }
// And combines the n last filters into a new filter using a `And` operation.
And combines the n last filters into a new filter using a And operation .