modify method

void modify(
  1. String key,
  2. Map<String, dynamic> change
)

modify data,without adding count

Implementation

void modify(String key,Map<String,dynamic> change){
  if(map.containsKey(key)){
    map[key]!.data=map[key]!.data..addAll(change);
    insert(key, map[key]!.data);
  }
}