CapacityStationExit only to output if it is the final one

dream/simulation/CapacityStationExit.py

@@ -44,7 +44,7 @@ class CapacityStationExit(Exit):
         self.nextCapacityStationBufferId=nextCapacityStationBufferId    # the id of the next station. If it is None it 
                                                                         # means it is the end of the system.
         self.nextCapacityStationBuffer=None                             # the next buffer. If it is None it
-                                                                        # means it is the end of the system.
+                                                                        # means it is the end of the system.        
     def initialize(self):
         Exit.initialize(self)
         self.isLocked=True
@@ -63,4 +63,13 @@ class CapacityStationExit(Exit):
     def canAccept(self, callerObject=None):
         if self.isLocked:
             return False
-        return Exit.canAccept(self)
\ No newline at end of file
+        return Exit.canAccept(self)
+    
+    # =======================================================================    
+    # outputs results to JSON File
+    # =======================================================================
+    def outputResultsJSON(self):
+        # output results only for the last exit
+        if not self.nextCapacityStationBuffer:
+            Exit.outputResultsJSON(self)
+        
\ No newline at end of file