Add id label to graph output

src/main/java/kieker/analysis/trace/traversal/AggrTraceToGraphTransformer.java

@@ -28,7 +28,7 @@ public class AggrTraceToGraphTransformer extends AbstractTraceToGraphTransformer
 		}
 
 		// TODO Add label
-		return graph.addEdge(null, parentVertex, thisVertex, "ID");
+		return graph.addEdge(null, parentVertex, thisVertex, String.valueOf(operationCall.getOrderIndex()) + '.');
 	}
 
 }

src/main/java/kieker/analysis/trace/traversal/TraceToGraphTransformer.java

@@ -27,7 +27,7 @@ public class TraceToGraphTransformer extends AbstractTraceToGraphTransformer<Ope
 		}
 
 		// TODO Add label
-		return graph.addEdge(null, parentVertex, thisVertex, "ID");
+		return graph.addEdge(null, parentVertex, thisVertex, String.valueOf(operationCall.getOrderIndex()) + '.');
 	}
 
 }