static [FGrammarBasedParseResult](API\Runtime\Core\Misc\FParse\FGrammarBasedParseResult) GrammarBasedCLIParse ( const TCHAR * Stream, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(FStringView, FStringView)> OnCommandCallback, [EGrammarBasedParseFlags](API\Runtime\Core\Misc\FParse\EGrammarBasedParseFlags) Flags )