Attempting to use an option of type Option<TimeSpan> fails because there is no implementation that calls TimeSpan.TryParse in: https://github.com/dotnet/command-line-api/blob/dd44dd05a20bf6af02615d8363948a630e821d00/src/System.CommandLine/Binding/ArgumentConverter.StringConverters.cs
Attempting to use an option of type Option fails because there is no implementation that calls TimeSpan.TryParse in:
https://github.com/dotnet/command-line-api/blob/dd44dd05a20bf6af02615d8363948a630e821d00/src/System.CommandLine/Binding/ArgumentConverter.StringConverters.cs