diff --git a/AlgebraicDataflowArchitectureModel/src/generators/CodeGenerator.java b/AlgebraicDataflowArchitectureModel/src/generators/CodeGenerator.java
index 6119b8c..3e51bb5 100644
--- a/AlgebraicDataflowArchitectureModel/src/generators/CodeGenerator.java
+++ b/AlgebraicDataflowArchitectureModel/src/generators/CodeGenerator.java
@@ -372,6 +372,7 @@
 	}
 
 	protected void fillDescendantGetterMethod(MethodDeclaration descendantGetter, ResourceHierarchy descendant, ResourceHierarchy ancestor, TypeDeclaration ancestorComponent, ILanguageSpecific langSpec) {
+		// (#4) descendant getter method (the implementation must be kept consistent with #3)
 		Expression selector;
 		if (DataConstraintModel.typeList.isAncestorOf(ancestor.getResourceStateType())) {
 			selector = new Variable(langSpec.getFieldAccessor(fieldOfResourceState));
@@ -614,7 +615,7 @@
 					getter.addChild(new Field(targetRes.getLeafResourceName(), targetRes.getResourceStateType()));
 					return getter;
 				} else {
-					// access from the outside of the hierarchy
+					// (#3) access from the outside of the hierarchy (must be kept consistent with #4)
 					Stack<ResourcePath> pathStack = new Stack<>();
 					ResourcePath curPath = targetRes;
 					do {