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: jql.go
    path of file: ./repos/jira-cli/pkg/jql
    
    the code of the file until where you have to start completion: package jql

import (
	"fmt"
	"regexp"
	"strings"
)

const (
	// DirectionAscending is an ascending sort order.
	DirectionAscending = "ASC"
	// DirectionDescending is a descending sort order.
	DirectionDescending = "DESC"
)

// GroupFunc groups 
    
func (j *JQL) NotIn(field string, value ...string) *JQL {
	n := len(value)
	if field != "" && n > 0 {
		var q strings.Builder

		q.WriteString(fmt.Sprintf("%s NOT IN (", field))
		for i, v := range value {
			q.WriteString(fmt.Sprintf("%q", v))
			if i != n-1 {
				q.WriteString(", ")
			}
		}
		q.WriteString(")")

		j.filters = append(j.filters, q.String())
	}
	return j
}