Bug 126839 [DataBinding] IObservable refactoring
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/provisional/databinding/converterfunctions/TheIdentityFunction.java
/**
	 * Identity converter singleton
	 */
	public static final IConversionFunction IDENTITY = new TheIdentityFunction();
	/* (non-Javadoc)
	 * @see org.eclipse.jface.binding.converter.IConverter#convert(java.lang.Object)
	 */
	public Object convert(Object source) {
        if (source == null) {
            return ""; 
        }
		return source;
	}
}