void Msgr_GroupNameChanged(object sender, GroupNameEventArgs e)
{
using (ConsoleExt.WithColor(eventColor))
Console.WriteLine("Group '{0}' name changed to '{1}'", e.PreviousName, e.Name);
}
internal void OnGroupNameChanged(GroupNameEventArgs e)
{
EventHandler<GroupNameEventArgs> handler = GroupNameChanged;
if (handler != null) handler(this, e);
}