batch method
Implementation
@override
void batch(VoidCallback callback) {
_batch++;
callback();
_batch--;
assert(_batch >= 0);
if (_batch == 0) _intervalListManager.coordinate();
}
@override
void batch(VoidCallback callback) {
_batch++;
callback();
_batch--;
assert(_batch >= 0);
if (_batch == 0) _intervalListManager.coordinate();
}