diff --git a/assignment/src/main/java/appointmentplanner/customlist/api/CustomLinkedList.java b/assignment/src/main/java/appointmentplanner/customlist/api/CustomLinkedList.java
index 6da82e4..2423c9a 100644
--- a/assignment/src/main/java/appointmentplanner/customlist/api/CustomLinkedList.java
+++ b/assignment/src/main/java/appointmentplanner/customlist/api/CustomLinkedList.java
@@ -1,6 +1,8 @@
 
 package appointmentplanner.customlist.api;
 
+import java.util.function.Predicate;
+
 public interface CustomLinkedList<T> extends Iterable<T> {
 
   void add(T item);
@@ -18,4 +20,6 @@ public interface CustomLinkedList<T> extends Iterable<T> {
   boolean contains(T item);
 
   int size();
+
+  CustomLinkedList<T> find(Predicate<T> filter);
 }