diff --git a/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java b/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java
index 144684852..4d2e19f3a 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java
@@ -1,20 +1,25 @@
 package com.ibm.wala.classLoader;
 
+import java.util.Set;
+
 import com.ibm.wala.types.ClassLoaderReference;
 import com.ibm.wala.types.TypeReference;
 import com.ibm.wala.util.Atom;
 
 public interface Language {
 
-  public static Language JAVA = new Language() {
+  public static Language JAVA = new LanguageImpl() {
+    @Override
     public Atom getName() {
       return ClassLoaderReference.Java;
     }
 
+    @Override
     public TypeReference getRootType() {
       return TypeReference.JavaLangObject;
     }
 
+    @Override
     public TypeReference getConstantType(Object o) {
       if (o instanceof String) {
         return TypeReference.JavaLangString;
@@ -23,6 +28,7 @@ public interface Language {
       }
     }
 
+    @Override
     public boolean isNullType(TypeReference type) {
       return false;
     }
@@ -30,6 +36,12 @@ public interface Language {
 
   Atom getName();
 
+  Language getBaseLanguage();
+
+  void registerDerivedLanguage(Language l);
+
+  Set<Language> getDerivedLanguages();
+
   TypeReference getRootType();
 
   TypeReference getConstantType(Object o);