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: completion.go
    path of file: ./repos/infra/internal/cmd
    
    the code of the file until where you have to start completion: package cmd

import (
	"fmt"
	"os"
	"path/filepath"

	"github.com/spf13/cobra"
)

func newCompletionsCmd() *cobra.Command {
	return &cobra.Command{
		Use:   "completion",
		Short: "Generate shell auto-completion for the CLI",
		Long: fmt.Sprintf(`To load completions:

##### Bash:

`+"`"+`$ source <(%[1]s completion bash)`+"`"+`

To load completions for each session, execute once:
* Linux:
  `+"`"+`$ %[1]s completion bash > /etc/bash_completion.d/%[1]s`+"`"+`
* macOS:
  `+"`"+`$ %[1]s completion bash > /usr/local/etc/bash_completion.d/%[1]s`+"`"+`

##### Zsh:

If shell completion is not already enabled in your environment, you will need to enable it. You can execute the following once:
`+"`"+`$ echo "autoload -U compinit; compinit" >> ~/.zshrc`+"`"+`

To load completions for each session, execute once:
`+"`"+`$ %[1]s completion zsh > "${fpath[1]}/_%[1]s"`+"`"+`

You will need to start a new shell for this setup to take effect.

##### fish:

`+"`"+`$ %[1]s completion fish | source`+"`"+`

To load completions for each session, execute once:
`+"`"+`$ %[1]s 
    
func newCompletionsCmd() *cobra.Command {
	return &cobra.Command{
		Use:   "completion",
		Short: "Generate shell auto-completion for the CLI",
		Long: fmt.Sprintf(`To load completions:

##### Bash:

`+"`"+`$ source <(%[1]s completion bash)`+"`"+`

To load completions for each session, execute once:
* Linux:
  `+"`"+`$ %[1]s completion bash > /etc/bash_completion.d/%[1]s`+"`"+`
* macOS:
  `+"`"+`$ %[1]s completion bash > /usr/local/etc/bash_completion.d/%[1]s`+"`"+`

##### Zsh:

If shell completion is not already enabled in your environment, you will need to enable it. You can execute the following once:
`+"`"+`$ echo "autoload -U compinit; compinit" >> ~/.zshrc`+"`"+`

To load completions for each session, execute once:
`+"`"+`$ %[1]s completion zsh > "${fpath[1]}/_%[1]s"`+"`"+`

You will need to start a new shell for this setup to take effect.

##### fish:

`+"`"+`$ %[1]s completion fish | source`+"`"+`

To load completions for each session, execute once:
`+"`"+`$ %[1]s completion fish > ~/.config/fish/completions/%[1]s.fish`+"`"+`

##### PowerShell:

`+"`"+`PS> %[1]s completion powershell | Out-String | Invoke-Expression`+"`"+`

To load completions for every new session, run:
`+"`"+`PS> %[1]s completion powershell > %[1]s.ps1`+"`"+`
and source this file from your PowerShell profile.
`, `infra`),
		DisableFlagsInUseLine: true,
		GroupID:               groupOther,
		ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
		Run: func(cmd *cobra.Command, args []string) {
			shell := filepath.Base(os.Getenv("SHELL"))
			if len(args) > 0 {
				shell = args[0]
			}

			switch shell {
			case "bash":
				cmd.Root().GenBashCompletion(os.Stdout) // nolint
			case "zsh":
				cmd.Root().GenZshCompletion(os.Stdout) // nolint
			case "fish":
				cmd.Root().GenFishCompletion(os.Stdout, true) // nolint
			case "powershell":
				cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout) // nolint
			default:
				fmt.Fprintf(os.Stdout, "No completions found for specified shell.\n")
			}
		},
	}
}