public static bool operator ==(AbstractActor aActorA, AbstractActor aActorB)
 {
     // if only one is null
     if (MathsUtility.XOR(object.Equals(aActorA, null), object.Equals(aActorB, null)))
     {
         // can't be equal if only one is null
         return(false);
     }
     else if (object.Equals(aActorA, null) && object.Equals(aActorB, null))
     {
         // both null, so, technically equal?
         return(true);
     }
     else
     {
         // neither null, so compare names
         return(aActorA.Equals(aActorB));
     }
 }