How to parse a command line with an an invalid parameter

I want to parse command line but with the possibility of providing an incorrect parameter.
I tried for example:
```
Parser.Default.ParseArguments(Environment.GetCommandLineArgs())
.WithNotParsed(errs => {
// code for errors
})
.WithParsed(opt => {
// code for valid options
});
```

but in situation when any command line parametr is incorrect commandline parser calls only code for errors handling ( "code for errors" in my example).
So how to handle valid parameters and skip incorrect?