Bug 301131 CreateGroupOperation, GroupDescription should be renamed or merged into existing classes
There are some remaining issues related to renamin Groups into Virtual Folders. org.eclipse.ui.internal.ide.undo.GroupDescription IMO should be merged with FolderDescription org.eclipse.ui.ide.undo.CreateGroupOperation should be merged with CreateFolderOperation IDEResourceInfoUtils#GROUP_TEXT org.eclipse.ui.wizards.datatransfer#ImportOperation#setCreateGroups Remy, if you see other related issues, please add a comment to the bug.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
* Eclipse compiler with regards to visibility and type resolution when
	 * linking.
	 * </p>
	 * 
	 * @param destination
	 *            the destination container
	 * @param sourceStores
	 *            the source IFileStore
	 * @return an error message, or <code>null</code> if the path is valid
	 */
	private String validateImportDestinationInternal(IContainer destination,
			IFileStore[] sourceStores) {
		if (!isAccessible(destination))
			return IDEWorkbenchMessages.CopyFilesAndFoldersOperation_destinationAccessError;
		if (!destination.isVirtual()) {
		IFileStore destinationStore;
		try {
			destinationStore = EFS.getStore(destination.getLocationURI());
		} catch (CoreException exception) {
			IDEWorkbenchPlugin.log(exception.getLocalizedMessage(), exception);
			return NLS
					.bind(
							IDEWorkbenchMessages.CopyFilesAndFoldersOperation_internalError,
							exception.getLocalizedMessage());
		}
		for (int i = 0; i < sourceStores.length; i++) {
			IFileStore sourceStore = sourceStores[i];
			IFileStore sourceParentStore = sourceStore.getParent();
			if (sourceStore != null) {
				if (destinationStore.equals(sourceStore)