diff --git a/src/main/java/jace/ide/LanguageHandler.java b/src/main/java/jace/ide/LanguageHandler.java
index 1fc9dd8..2c44a40 100644
--- a/src/main/java/jace/ide/LanguageHandler.java
+++ b/src/main/java/jace/ide/LanguageHandler.java
@@ -3,10 +3,10 @@ package jace.ide;
 public interface LanguageHandler<T> {
 
     public String getNewDocumentContent();
-
+    
     public CompileResult<T> compile(Program program);
 
     public void execute(CompileResult<T> lastResult);
     
-    
+    public void clean(CompileResult<T> lastResult);
 }
\ No newline at end of file