An abstract class that adds a consistent API for common methods that's needed
 * by Vaadin's server-based selection models to work.
 * <p>
 * <em>Note:</em> This should be an interface instead of an abstract class, if
 * only we could define protected methods in an interface.
An abstract class that adds a consistent API for common methods that's needed
 * by Vaadin's server-based selection models to work.
 * <p>
 * <em>Note:</em> This should be an interface instead of an abstract class, if
 * only we could define protected methods in an interface. | AbstractRowHandleSelectionModel.java