updateSelectedReaction method
Implementation
void updateSelectedReaction(String reaction) {
  selectedReaction = reaction;
  if (!reactionsRequests.containsKey(reaction)) {
    createReactionsRequest(reaction);
  }
  update();
}void updateSelectedReaction(String reaction) {
  selectedReaction = reaction;
  if (!reactionsRequests.containsKey(reaction)) {
    createReactionsRequest(reaction);
  }
  update();
}