addVisitor method
add visitor
true if visitor not exists
Implementation
bool addVisitor(FormeFieldVisitor<T> visitor) {
if (!_visitors.contains(visitor)) {
_visitors.add(visitor);
return true;
}
return false;
}
add visitor
true if visitor not exists
bool addVisitor(FormeFieldVisitor<T> visitor) {
if (!_visitors.contains(visitor)) {
_visitors.add(visitor);
return true;
}
return false;
}