updateKeyer method
Implementation
void updateKeyer(int meIndex, int keyerIndex, KeyerState state) {
_keyers.putIfAbsent(meIndex, () => {})[keyerIndex] = state;
}
void updateKeyer(int meIndex, int keyerIndex, KeyerState state) {
_keyers.putIfAbsent(meIndex, () => {})[keyerIndex] = state;
}