public static bool HaveAllBuffsKnown(this WoWUnit unit, params string[] names)
        {
            foreach (string name in names)
            {
                if (RotationSpellbook.IsKnown(name) && !unit.HasBuff(name))
                {
                    return(false);
                }
            }

            return(true);
        }
 public bool IsKnown()
 {
     return(RotationSpellbook.IsKnown(_name, _rank ?? 1));
 }