elk-util-parent/elk-util-collections/src/main/java/org/semanticweb/elk/util/collections/entryset/EntryCollection.java
@Override
	public void clear() {
		modCount++;
		E[] tab = buckets;
		for (int i = 0; i < tab.length; i++)
			tab[i] = null;
		size = 0;
	}
@Override
	public void clear() {
		modCount++;
		E[] tab = buckets;
		for (int i = 0; i < tab.length; i++)
			tab[i] = null;
		size = 0;
	}
Removes all entries from this set. The set will be empty after this call
returns.