In System.CommandLine 2.0.0-beta4.22272.1 (commit 209b724a3c843253d3071e8348c353b297b0b8b5), if I set up an option like this ```csharp this.jsonDirectoryOption = new Option<DirectoryInfo>( name: "--json-directory", description: "Writes API JSON responses to the specified directory."); this.jsonDirectoryOption.ExistingOnly(); this.Add(this.jsonDirectoryOption); ``` then `--help` generated a default description for the argument of the option: ``` --json-directory <json-directory> Writes API JSON responses to the specified directory. ``` In System.CommandLine 2.0.0-beta4.23165.2 (commit 4d1e6ac49a1fd0606862364aa5a2c6be2152ac16), if I similarly set up an option ```csharp this.jsonDirectoryOption = new Option<DirectoryInfo>("--json-directory") { Description = "Writes API JSON responses to the specified directory.", }; this.jsonDirectoryOption.AcceptExistingOnly(); this.Options.Add(this.jsonDirectoryOption); ``` then `--help` does not show that the option requires an argument: ``` --json-directory Writes API JSON responses to the specified directory. ``` I can correct the `--help` output by setting Option.HelpName in my application, but this is quite a surprising change and should at least be documented in the upcoming release notes.