package com.elmakers.mine.bukkit.block;

import java.util.HashSet;

public class NegatedHashSet<T> extends HashSet {
    @Override
    public boolean contains(Object o) {
        return !super.contains(o);
    }
}

@@ -107,18 +107,75 @@
  HashSet
- %7B
+%3CT%3E %7B%0A    private static final long serialVersionUID = 1L;%0A
 %0A    @Ov

Fix warnings in NegatedHashSet.