diff --git a/AlgebraicDataflowArchitectureModel/src/models/dataFlowModel/DataFlowGraph.java b/AlgebraicDataflowArchitectureModel/src/models/dataFlowModel/DataFlowGraph.java
index bf39e5e..7f88b82 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/dataFlowModel/DataFlowGraph.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/dataFlowModel/DataFlowGraph.java
@@ -166,12 +166,26 @@
 		return rootChannelNodes;
 	}
 	
+	/**
+	 * Adds an edge from a resource node to a channel node.
+	 *
+	 * @param srcNode A resource node to be added as the source node of the edge.
+	 * @param dstNode A channel node to be added as the destination node of the edge.
+	 * @return The newly created edge.
+	 */
 	public DataFlowEdge addEdge(ResourceNode srcNode, ChannelNode dstNode) {
 		DataFlowEdge edge = new DataFlowEdge(srcNode, dstNode);
 		addEdge(edge);
 		return edge;
 	}
 	
+	/**
+	 * Adds an edge from a channel node to a resource node.
+	 *
+	 * @param srcNode A channel node to be added as the source node of the edge.
+	 * @param dstNode A resource node to be added as the destination node of the edge.
+	 * @return The newly created edge.
+	 */
 	public DataFlowEdge addEdge(ChannelNode srcNode, ResourceNode dstNode) {
 		DataFlowEdge edge = new DataFlowEdge(srcNode, dstNode);
 		addEdge(edge);