Bug 127861 [DataBinding] Mark API provisional
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/updatables/IdentityFunction.java
package org.eclipse.jface.databinding.updatables;
import org.eclipse.jface.databinding.IChangeListener;
import org.eclipse.jface.databinding.IReadableSet;
import org.eclipse.jface.databinding.IUpdatableFunction;
import org.eclipse.jface.databinding.IUpdatableFunctionFactory;
public final class IdentityFunction implements IUpdatableFunction {
	private static IdentityFunction instance = null;
	private static IUpdatableFunctionFactory factory;
	private IdentityFunction() {	
	}
	
	public static IdentityFunction getInstance() {
		if (instance == null) {
			instance = new IdentityFunction();
		}
		return instance;
	}