diff --git a/src/main/java/de/dhbwstuttgart/syntaxtree/type/ExtendsWildcardType.java b/src/main/java/de/dhbwstuttgart/syntaxtree/type/ExtendsWildcardType.java
index 5f282e46..663bc9dc 100644
--- a/src/main/java/de/dhbwstuttgart/syntaxtree/type/ExtendsWildcardType.java
+++ b/src/main/java/de/dhbwstuttgart/syntaxtree/type/ExtendsWildcardType.java
@@ -53,4 +53,10 @@ public class ExtendsWildcardType extends WildcardType{
 	public void accept(ResultSetVisitor visitor) {
 		visitor.visit(this);
 	}
+
+	@Override
+	public boolean equals(Object o) {
+		// TODO Auto-generated method stub
+		return false;
+	}
 }
diff --git a/src/main/java/de/dhbwstuttgart/syntaxtree/type/GenericRefType.java b/src/main/java/de/dhbwstuttgart/syntaxtree/type/GenericRefType.java
index a14813e7..4ca2ebd6 100644
--- a/src/main/java/de/dhbwstuttgart/syntaxtree/type/GenericRefType.java
+++ b/src/main/java/de/dhbwstuttgart/syntaxtree/type/GenericRefType.java
@@ -32,5 +32,11 @@ public class GenericRefType extends RefTypeOrTPHOrWildcardOrGeneric
     public void accept(ResultSetVisitor visitor) {
         visitor.visit(this);
     }
+
+	@Override
+	public boolean equals(Object o) {
+		// TODO Auto-generated method stub
+		return false;
+	}
 }
 
diff --git a/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefType.java b/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefType.java
index 3e86275a..26f25fcf 100644
--- a/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefType.java
+++ b/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefType.java
@@ -77,8 +77,8 @@ public class RefType extends RefTypeOrTPHOrWildcardOrGeneric
         if(obj instanceof RefType){
             boolean ret = true;
             
-            if(!super.equals(obj))
-            	return false;
+            //if(!(super.equals(obj))) PL 2020-03-12 muss vll. einkommentiert werden   
+            //	return false;
             
             if(parameter==null || parameter.size()==0){
                 ret &= (((RefType)obj).getParaList()==null || ((RefType)obj).getParaList().size()==0);
diff --git a/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefTypeOrTPHOrWildcardOrGeneric.java b/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefTypeOrTPHOrWildcardOrGeneric.java
index 61cfd060..22c8ab4b 100644
--- a/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefTypeOrTPHOrWildcardOrGeneric.java
+++ b/src/main/java/de/dhbwstuttgart/syntaxtree/type/RefTypeOrTPHOrWildcardOrGeneric.java
@@ -16,6 +16,7 @@ public abstract class RefTypeOrTPHOrWildcardOrGeneric extends SyntaxTreeNode{
     public abstract <A> A acceptTV(TypeVisitor<A> visitor);
     public abstract void accept(ResultSetVisitor visitor);
     
+    @Override
     public abstract boolean equals(Object o);
     
 }
diff --git a/src/main/java/de/dhbwstuttgart/syntaxtree/type/SuperWildcardType.java b/src/main/java/de/dhbwstuttgart/syntaxtree/type/SuperWildcardType.java
index 625fb01b..6a61b9cb 100644
--- a/src/main/java/de/dhbwstuttgart/syntaxtree/type/SuperWildcardType.java
+++ b/src/main/java/de/dhbwstuttgart/syntaxtree/type/SuperWildcardType.java
@@ -64,4 +64,10 @@ public class SuperWildcardType extends WildcardType{
 	public void accept(ResultSetVisitor visitor) {
 		visitor.visit(this);
 	}
+
+	@Override
+	public boolean equals(Object o) {
+		// TODO Auto-generated method stub
+		return false;
+	}
 }