           The command as delegate.
             <div class="codeSnippet"><div class="codeHeader"><span class="codeHeaderTitle">C#</span><button class="button is-small is-light copyCode" title="Copy"><span class="icon is-small"><i class="fa fa-copy"></i></span><span>Copy</span></button></div><div class="codePanel hljs"><pre xml:space="preserve"><code class="language-cs">([CliArgument] string argument1, bool option1) =&gt; { }

([CliArgument] string argument1, bool option1) =&gt; { return 0; }

async ([CliAr