Index: /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/treeifc/ITaskBuilder.java
===================================================================
--- /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/treeifc/ITaskBuilder.java	(revision 2255)
+++ /trunk/autoquest-core-tasktrees/src/main/java/de/ugoe/cs/autoquest/tasktrees/treeifc/ITaskBuilder.java	(revision 2256)
@@ -257,8 +257,10 @@
     /**
      * <p>
-     * TODO: comment
+     * This method is called to discard a task instance. This means, that any reference to the
+     * instance is removed from the corresponding model. This ensures model consistency if the
+     * model or the instances or both are changed.
      * </p>
      *
-     * @param instance
+     * @param instance the instance to discard
      */
     void discardTaskInstance(ITaskInstance instance);