Bug 126658 [CommonNavigator] [DND] Complete definition of DND API
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/internal/navigator/resources/plugin/WorkbenchNavigatorPlugin.java
private static WorkbenchNavigatorPlugin plugin;
	public static String PLUGIN_ID = "org.eclipse.ui.navigator.resources"; 
	/**
	 * Creates a new instance of the receiver