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: flag_uint_slice.go
    path of file: ./repos/teller/vendor/github.com/urfave/cli/v2
    
    the code of the file until where you have to start completion: package cli

import (
	"encoding/json"
	"flag"
	"fmt"
	"strconv"
	"strings"
)

// UintSlice wraps []int to satisfy flag.Value
type UintSlice struct {
	slice      []uint
	separator  separatorSpec
	hasBeenSet bool
}

// NewUintSlic
    
func (f *UintSliceFlag) GetValue() string {
	var defaultVals []string
	if f.Value != nil && len(f.Value.Value()) > 0 {
		for _, i := range f.Value.Value() {
			defaultVals = append(defaultVals, strconv.FormatUint(uint64(i), 10))
		}
	}
	return strings.Join(defaultVals, ", ")
}