Bug 83248 Warnings in javadoc generation
If you check N20050119-0010/compilelogs/platform.doc.isv.javadoc.txt, you will find that there are a lot of warnings during the javadoc generation of platform plugins. I will attach patches to get rid of them.
bundles/org.eclipse.jface/src/org/eclipse/jface/action/IContributionItem.java
/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jface.action;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.CoolBar;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.ToolBar;
/**
 * A contribution item represents a contribution to a shared UI resource such as a
 * menu or tool bar. More generally, contribution items are managed by a contribution
 * manager.
 * For instance, in a tool bar a contribution item is a tool bar button or a separator.
 * In a menu bar a contribution item is a menu, and in a menu a contribution item 
 * is a menu item or separator.