diff --git a/arrays/.project b/arrays/.project
index 53f6ab5..6b4fa5c 100644
--- a/arrays/.project
+++ b/arrays/.project
@@ -14,4 +14,15 @@
 	<natures>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 	</natures>
+	<filteredResources>
+		<filter>
+			<id>1739196678733</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
 </projectDescription>
diff --git a/arrays/src/arrays/Main.java b/arrays/src/arrays/Main.java
index 9f3be2d..f39475e 100644
--- a/arrays/src/arrays/Main.java
+++ b/arrays/src/arrays/Main.java
@@ -1,3 +1,15 @@
 package arrays;
 
-class Sieve implements Iterator<T> {}
+import java.util.Iterator;
+import tester.Tester;
+
+class Sieve implements Iterator<Integer> {
+
+    public boolean hasNext() { return false; }
+
+    public Integer next() { return null; }
+}
+
+class Examples {
+    Iterator<Integer> i = new Sieve();
+}
diff --git a/traversal/src/traversal/Main.java b/traversal/src/traversal/Main.java
index d61c80e..edbff6b 100644
--- a/traversal/src/traversal/Main.java
+++ b/traversal/src/traversal/Main.java
@@ -178,6 +178,7 @@ class BFT<X> implements Iterator<X> {
     }
 }
 
+/*
 class TreeFinder {
     // Know the first element of the preorder list will be the root node of the
     // tree. Assuming node values are unique, you can then locate that node in
@@ -185,7 +186,6 @@ class TreeFinder {
     // subtree, the ones to the right on the right. Repeat the process on the
     // subtreees.
 
-    // Learned you can do static methods with a type like this :).
     static <T> BT<T> find(ArrayList<T> inorder, ArrayList<T> preorder) {
         int inorderRootIdx = inorder.indexOf(preorder.getFirst());
         System.out.println(inorderRootIdx);
@@ -238,6 +238,7 @@ class TreeFinder {
         return new Node<>(val, leftTree, rightTree);
     }
 }
+*/
 
 class Examples {
     BT<Integer> tree;
@@ -297,6 +298,7 @@ class Examples {
         );
     }
 
+    /*
     void testTreeFinder(Tester t) {
         init();
 
@@ -313,4 +315,5 @@ class Examples {
 
         t.checkExpect(found, tree);
     }
+    */
 }