Bug 126658 [CommonNavigator] [DND] Complete definition of DND API
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/internal/navigator/resources/workbench/ResourceDropAction.java
}
	/**
	 * Returns an error status with the given info.
	 */
	private IStatus info(String message) {
		return new Status(IStatus.INFO, PlatformUI.PLUGIN_ID, 0, message, null);
	}
	/**
	 * Adds the given status to the list of problems. Discards OK statuses. If the status is a
	 * multi-status, only its children are added.
	 */
	private void mergeStatus(MultiStatus status, IStatus toMerge) {
		if (!toMerge.isOK()) {
			status.merge(toMerge);
		}
	}
	/**
	 * Returns an status indicating success.
	 */
	private IStatus ok() {
		return new Status(IStatus.OK, PlatformUI.PLUGIN_ID, 0, ResourceNavigatorMessages.getString("DropAdapter.ok"), null); 
	}
	/**
	 * Opens an error dialog if necessary. Takes care of complex rules necessary for making the
	 * error dialog look nice.
	 */
	private void openError(IStatus status) {
		if (status == null)
			return;
		String genericTitle = ResourceNavigatorMessages.getString("DropAdapter.title");