Sets are now Copyable

src/builder/resources/speiger/assets/collections/templates/sets/ImmutableOpenHashSet.template

@@ -4,6 +4,7 @@ package speiger.src.collections.PACKAGE.sets;
 import java.util.Comparator;
 import java.util.function.Consumer;
 #endif
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
@@ -50,6 +51,12 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 	/** The Last Index in the Map */
 	protected int lastIndex = -1;
 	
+	/**
+	 * Helper constructor to optimize the copying
+	 * Only accessible through implementations
+	 */
+	protected IMMUTABLE_HASH_SET() {}
+	
 	/**
 	 * Helper constructor that allow to create a set from unboxed values
 	 * @param array the elements that should be put into the set
@@ -372,6 +379,20 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 		return new SetIterator(fromElement);
 	}
 	
+	@Override
+	public IMMUTABLE_HASH_SET KEY_GENERIC_TYPE copy() {
+		IMMUTABLE_HASH_SET KEY_GENERIC_TYPE set = new IMMUTABLE_HASH_SETBRACES();
+		set.containsNull = containsNull;
+		set.firstIndex = firstIndex;
+		set.lastIndex = lastIndex;
+		set.size = size;
+		set.mask = mask;
+		set.nullIndex = nullIndex;
+		set.keys = Arrays.copyOf(keys, keys.length);
+		set.links = Arrays.copyOf(links, links.length);
+		return set;
+	}
+	
 	@Override
 	public COMPARATOR KEY_GENERIC_TYPE comparator() { return null; }