diff --git a/src/main/java/net/kemitix/node/NodeItem.java b/src/main/java/net/kemitix/node/NodeItem.java
index c41a3d7..7f0cd75 100644
--- a/src/main/java/net/kemitix/node/NodeItem.java
+++ b/src/main/java/net/kemitix/node/NodeItem.java
@@ -3,7 +3,11 @@ package net.kemitix.node;
 import lombok.NonNull;
 import lombok.val;
 
-import java.util.*;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
 import java.util.function.Function;
 
 /**