Function complete 

pub fn complete(options: &CompleteOptions) -> Result<String, UsageErr>

Generates a shell completion script for the specified shell.

Arguments

• options - Configuration options including target shell and spec source

Returns

The generated completion script as a string, or an error if the shell is unsupported.

Supported Shells

• bash - Bash completion using complete builtin
• fish - Fish shell completions
• zsh - Zsh completion using compdef
• powershell - PowerShell completion using Register-ArgumentCompleter