putIfAbsent method

FutureOr<V?> putIfAbsent(
  1. K key,
  2. V? absentValue
)

Implementation

FutureOr<V?> putIfAbsent(K key, V? absentValue) {
  var self = this;
  if (self is Future<SharedMap<K, V>>) {
    return self.putIfAbsent(key, absentValue);
  } else {
    return self.putIfAbsent(key, absentValue);
  }
}