Aselia.Core.Channel.AddMode C# (CSharp) Method

        private bool AddMode(UserBase user, ChannelModeAttribute attr, string argument)
        {
            try
            {
                ReceivedChannelModeEventArgs e = new ReceivedChannelModeEventArgs(Server, this, user, argument);
                Server.Domains.AddChannelModeHandlers[attr.Mode].Invoke(this, e);

                if (e.IsCanceled)
                {
                    return false;
                }
                else
                {
                    Modes[attr.Mode] = argument ?? string.Empty;
                    return true;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error adding mode {0}: {1}", ex);
                return false;
            }
        }