/// <summary>
/// Opens the new watchlist.
/// </summary>
/// <param name="userId">The unique identifier of the user who owns the watchlist.</param>
/// <param name="name">The watchlist name.</param>
/// <param name="symbols">The initial symbols on the watchlist.</param>
/// <returns>The identifier of the newly created watchlist.</returns>
public Guid CreateWatchlist(Guid userId, string name, IEnumerable <string> symbols)
{
Validate.NotEmpty(userId, nameof(userId));
Validate.NotNullOrWhitespace(name, nameof(name));
Watchlist watchlist = Watchlist.CreateNew(userId, name, symbols);
_watchlistRepository.Save(watchlist);
return(watchlist.Id);
}
