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: commands.go
    path of file: ./repos/sliver/client/command/shikata-ga-nai
    
    the code of the file until where you have to start completion: package sgn

import (
	"github.com/rsteube/carapace"
	"github.com/spf13/cobra"
	"github.com/spf13/pflag"

	"github.com/bishopfox/sliver/client/command/flags"
	"github.com/bishopfox/sliver/client/command/help"
	"github.com/bishopfox/sliver/client/console"
	consts "github.com/bishopfox/sliver/client/constants"
)

// Commands returns 
    
func Commands(con *console.SliverClient) []*cobra.Command {
	shikataGaNaiCmd := &cobra.Command{
		Use:   consts.ShikataGaNai,
		Short: "Polymorphic binary shellcode encoder (ノ ゜Д゜)ノ ︵ 仕方がない",
		Long:  help.GetHelpFor([]string{consts.ShikataGaNai}),
		Run: func(cmd *cobra.Command, args []string) {
			ShikataGaNaiCmd(cmd, con, args)
		},
		Args:    cobra.ExactArgs(1),
		GroupID: consts.PayloadsHelpGroup,
	}
	flags.Bind("shikata ga nai", false, shikataGaNaiCmd, func(f *pflag.FlagSet) {
		f.StringP("save", "s", "", "save output to local file")
		f.StringP("arch", "a", "amd64", "architecture of shellcode")
		f.IntP("iterations", "i", 1, "number of iterations")
		f.StringP("bad-chars", "b", "", "hex encoded bad characters to avoid (e.g. 0001)")
		f.Int64P("timeout", "t", flags.DefaultTimeout, "grpc timeout in seconds")
	})
	flags.BindFlagCompletions(shikataGaNaiCmd, func(comp *carapace.ActionMap) {
		(*comp)["arch"] = carapace.ActionValues("386", "amd64").Tag("shikata-ga-nai architectures")
		(*comp)["save"] = carapace.ActionFiles().Tag("directory/file to save shellcode")
	})
	carapace.Gen(shikataGaNaiCmd).PositionalCompletion(carapace.ActionFiles().Tag("shellcode file"))

	return []*cobra.Command{shikataGaNaiCmd}
}