split operator was not exported

Closes #1676 (closed)

pathvisio/src/main/java/lcsb/mapviewer/wikipathway/xml/ModelToGPML.java

@@ -243,7 +243,7 @@ public class ModelToGPML {
     PolylineData res = new PolylineData();
 
     NodeOperator and = start.getNodeOperatorForInput();
-    // NodeOperator split = end.getNodeOperatorForOutput();
+    NodeOperator split = end.getNodeOperatorForOutput();
 
     PolylineData startLine = start.getLine();
     Point2D ps = startLine.getStartPoint();
@@ -257,6 +257,9 @@ public class ModelToGPML {
     if (and != null) {
       res.addLines(and.getLine().getLines());
     }
+    if (split != null) {
+      res.addLines(split.getLine().reverse().getLines());
+    }
 
     PolylineData endLine = end.getLine();
     Point2D pe = endLine.getEndPoint();