visitOptional method

@override List<Matcher<Expression>> visitOptional(OptionalExpression node)

Implementation

@override
List<Matcher> visitOptional(OptionalExpression node) {
  if (postfix) {
    return _visitSingle(
        node, (matcher) => PostfixOptionalMatcher(node, matcher));
  } else {
    return _visitSingle(node, (matcher) => OptionalMatcher(node, matcher));
  }
}