Bug 127861 [DataBinding] Mark API provisional
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/updatables/EmptyReadableSet.java
package org.eclipse.jface.databinding.updatables;
import java.util.Collection;
import java.util.Collections;
import org.eclipse.jface.databinding.IChangeListener;
import org.eclipse.jface.databinding.IReadableSet;
/**
 * Implements the empty set as an IReadableSet.
 * 
 * @since 3.2
 */
public class EmptyReadableSet implements IReadableSet {
	private static EmptyReadableSet instance;
	private EmptyReadableSet() {
	}
	
	/**
	 * Returns the shared instance of EmptyReadableSet
	 * 
	 * @return