ListChooser.std constructor
      
      ListChooser.std(
    
- StdinService _stdInput,
- StdoutService _stdOutput,
- List<String> ? items, {
Named constructor mostly for unit testing.
For context and an example see CLI_Dialog, README.md and the test/ folder.
Implementation
ListChooser.std(this._stdInput, this._stdOutput, this.items,
    {this.navigationMode = false}) {
  _checkItems();
  if (stdin.hasTerminal) {
    stdin.echoMode = false;
    stdin.lineMode = false;
  }
}