copyWith method
- String? cursor,
Implementation
ConversationFetchOptions copyWith({String? cursor}) =>
    ConversationFetchOptions._(
      pageSize: pageSize,
      cursor: cursor,
      mark: mark,
      pinned: pinned,
    );ConversationFetchOptions copyWith({String? cursor}) =>
    ConversationFetchOptions._(
      pageSize: pageSize,
      cursor: cursor,
      mark: mark,
      pinned: pinned,
    );