public bool TryExtractNamedArgument(IEnumerable <string> validArgumentNames, out string?argument, out string?value, out State newState)
{
var result = argumentExtractor.TryExtractNamedArgument(validArgumentNames, out argument, out value, out var newArgumentExtractor, assignmentOperators);
if (result)
{
newState = new State(parameters, newArgumentExtractor, postValidations, assignmentOperators);
}
else
{
newState = this;
}
return(result);
}
