How to get symbol name from a `SymbolResult`

[KathleenDollard]

I may be overlooking something obvious, or just have spaced on this...

I want to transform the ParseResult for combining with additional failures that will be grouped by symbol name.

I can get the SymbolResult from ParseResult.Errors.First().SymbolResult

However, I do not see how to get the Symbol from the SymbolResult (which seems odd enough I am pretty sure I have overlooked something).

@jonsequitur

[jonsequitur]

SymbolResult is abstract. You can pattern match to the derived types like this and get their associated symbols like this:

command-line-api/src/System.CommandLine/ParseResult.cs

Lines 235 to 241 in e292617

	Symbol currentSymbol = currentSymbolResult switch
	{
	ArgumentResult argumentResult => argumentResult.Argument,
	OptionResult optionResult => optionResult.Option,
	DirectiveResult directiveResult => directiveResult.Directive,
	_ => ((CommandResult)currentSymbolResult).Command
	};