visitOptional method
Implementation
@override
void visitOptional(OptionalExpression node) {
node.visitChildren(this);
final child = node.expression;
_setReturnType(node, child.resultType + '?');
}
@override
void visitOptional(OptionalExpression node) {
node.visitChildren(this);
final child = node.expression;
_setReturnType(node, child.resultType + '?');
}