поправка в методе вставки по позиции

DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/MassiveGenericObjects.cs

@@ -75,12 +75,12 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
         }
         while (copy_of_position > 0)
         {
-            if (_collection[position] == null)
+            if (_collection[copy_of_position] == null)
             {
-                _collection[position] = obj;
-                return position;
+                _collection[copy_of_position] = obj;
+                return copy_of_position;
             }
-            position--;
+            copy_of_position--;
         }
 
         return -1;