diff --git a/AlgebraicDataflowArchitectureModel/src/models/DirectedGraph.java b/AlgebraicDataflowArchitectureModel/src/models/DirectedGraph.java
index 3b9d1d3..42b7208 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/DirectedGraph.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/DirectedGraph.java
@@ -64,4 +64,8 @@
 		edge.getSource().removeOutEdge(edge);
 		edge.getDestination().removeInEdge(edge);
 	}
+	
+	protected void simpleAddEdge(Edge edge) {
+		edges.add(edge);
+	}
 }