Fix method signatures for apple machines

Assets/Scripts/Core/SaveLoad/AppleMachine.cs

@@ -26,9 +26,9 @@ namespace Core.SaveLoad
         /// Has this state machine been restored from save data?
         /// </summary>
         public bool HasBeenRestored { get; private set; }
-
+        
         // Override ChangeState to call OnEnterState on SaveableState components
-        public new GameObject ChangeState(GameObject state)
+        public new void ChangeState(GameObject state)
         {
             var result = base.ChangeState(state);
             
@@ -41,11 +41,9 @@ namespace Core.SaveLoad
                     saveableState.OnEnterState();
                 }
             }
-            
-            return result;
         }
 
-        public new GameObject ChangeState(string state)
+        public new void ChangeState(string state)
         {
             var result = base.ChangeState(state);
             
@@ -58,11 +56,9 @@ namespace Core.SaveLoad
                     saveableState.OnEnterState();
                 }
             }
-            
-            return result;
         }
 
-        public new GameObject ChangeState(int childIndex)
+        public new void ChangeState(int childIndex)
         {
             var result = base.ChangeState(childIndex);
             
@@ -75,8 +71,6 @@ namespace Core.SaveLoad
                     saveableState.OnEnterState();
                 }
             }
-            
-            return result;
         }
 
         private void Start()