Bug 251257 [Contributions] IAction.setImageDescriptor() javadoc needs to note "image vs. checked" platform discrepancy
bundles/org.eclipse.jface/src/org/eclipse/jface/action/IAction.java
* @see #CHECKED
     */
    public void setChecked(boolean checked);
    /**
     * Sets this action's description.
     * Typically the description is shown as a (longer) help text in the status line.
     * <p>
     * Fires a property change event for the <code>DESCRIPTION</code> property
     * if the description actually changes as a consequence.
     * </p>
     *
     * @param text the description, or <code>null</code> to clear the description
     * @see #DESCRIPTION
     */
    public void setDescription(String text);
    /**
     * Sets the disabled image for this action, as an image descriptor.
     * <p>
     * Disabled images will be used on platforms that support changing the image
     * when the item is disabled.Fires a property change event for 
     * the <code>IMAGE</code> property
     * if the image actually changes as a consequence.
     * </p>
     *
     * @param newImage the image, or <code>null</code> if this 
     *   action should not have an image
     * @see #IMAGE
     */
    public void setDisabledImageDescriptor(ImageDescriptor newImage);
    /**