unknown transition is exported as conversion in GPML

CHANGELOG

@@ -15,6 +15,8 @@ minerva (15.1.0) unstable; urgency=medium
   * Small improvement: API allows to remove plugin data entry (#1298)
   * Small improvement: transport/translation/transcription reactions are
     exported to SBGN PD (#1302)
+  * Small improvement: Unknown Transition Reaction is exported to GPML as
+    CONVERSION (#1300)
   * Bug fix: export to image from selected polygon contained all elements
     inside rectangle bounded by the polygon coordinates (#1096)
   * Bug fix: continuous refreshing list of project when uploading/removing

pathvisio/src/main/java/lcsb/mapviewer/wikipathway/model/InteractionMapping.java

@@ -170,7 +170,6 @@ public enum InteractionMapping {
       Modulation.class, true,
       Product.class, true),
 
-
   /**
    * Inhibition.
    */
@@ -513,7 +512,7 @@ public enum InteractionMapping {
     }
     return result;
   }
-  
+
   public static GpmlInteractionType getGpmlInteractionTypeForMinervaReactionClass(Class<? extends Reaction> clazz) {
     GpmlInteractionType result = GpmlInteractionType.CONVERSION;
     for (InteractionMapping mapping : InteractionMapping.values()) {
@@ -525,6 +524,10 @@ public enum InteractionMapping {
         }
       }
     }
+
+    if (clazz.isAssignableFrom(UnknownTransitionReaction.class)) {
+      result = GpmlInteractionType.CONVERSION;
+    }
     return result;
   }
 }