Bug 29163 SafeRunnable needs to be accessible in JFace
We need to be able to access the SafeRunnable in JFace in order that some error protection can be added to preferences and properties dialogs.
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/wizard/IWizardNode.java
/**
 * Disposes the wizard managed by this node. Does nothing
 * if the wizard has not been created.
 * <p>
 * This is the last message that should ever be sent to this node.
 * </p>
 */
public void dispose();
/**
 * Returns the extent of the wizard for this node.