Bug 182714 [Contributions] Improve toolbar configurability
bundles/org.eclipse.jface/src/org/eclipse/jface/action/MenuManager.java
* Sets the action definition id of this action. This simply allows the menu
	 * item text to include a short cut if available.  It can be used to
	 * notify a user of a key combination that will open a quick menu.
	 * 
	 * @param definitionId
	 *            the command definition id
	 * @since 3.4
	 */
    public void setActionDefinitionId(String definitionId) {
    	this.definitionId = definitionId; 
    }
    /* (non-Javadoc)
     * @see org.eclipse.jface.action.IContributionItem#update()
     */
    public void update() {
        updateMenuItem();
    }
    /**
     * The <code>MenuManager</code> implementation of this <code>IContributionManager</code>
     * updates this menu, but not any of its submenus.
     *
     * @see #updateAll
     */
    public void update(boolean force) {
        update(force, false);
    }
    /**
	 * Get all the items from the implementation's widget.
	 * 
	 * @return the menu items