containsKey method

@override Future<bool> containsKey(String key)

Determines if the Stash contains an entry for the specified key.

• key: key whose presence in this stash is to be tested.

Returns true if this Stash contains a mapping for the specified key

Implementation

@override
Future<bool> containsKey(String key) {
  return _getStorageEntry(key).then((entry) {
    return entry != null;
  });
}