ngDoCheck

Source

void ngDoCheck() {
  if (_iterableDiffer != null) {
    var changes = _iterableDiffer.diff(_rawClass);
    if (changes != null) {
      _applyIterableChanges(changes);
    }
  }
  if (_keyValueDiffer != null) {
    var changes = _keyValueDiffer.diff(_rawClass);
    if (changes != null) {
      _applyKeyValueChanges(changes);
    }
  }
}