visitOptional<E> method
Implementation
@override
void visitOptional<E>(OptionalExpression<E> node) {
final child = node.expression;
child.accept(this);
_setIsOptional(node, true);
}
@override
void visitOptional<E>(OptionalExpression<E> node) {
final child = node.expression;
child.accept(this);
_setIsOptional(node, true);
}