create method
If no mapping exists for key, associates it with value and
returns the commit-log sequence number; otherwise behaviour is
implementation-defined (typically throws).
Returns the commit-log sequence number assigned to this write,
or null if no sequence number was produced.
Throws a DataStoreException if the underlying store fails.
Implementation
@override
Future<int?> create(String key, AtNotification value,
{bool skipCommit = false}) =>
put(key, value, skipCommit: skipCommit);