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
* 
	 * @param destination
	 *            copy destination
	 * @param sourceResources
	 *            source resources
	 * @return <code>true</code> all files passed validation or there were no
	 *         files to validate. <code>false</code> one or more files did not
	 *         pass validation.
	 */
	private boolean validateEdit(IContainer destination,
			IResource[] sourceResources) {
		ArrayList copyFiles = new ArrayList();
		collectExistingReadonlyFiles(destination.getFullPath(),
				sourceResources, copyFiles);
		if (copyFiles.size() > 0) {
			IFile[] files = (IFile[]) copyFiles.toArray(new IFile[copyFiles
					.size()]);
			IWorkspace workspace = ResourcesPlugin.getWorkspace();
			IStatus status = workspace.validateEdit(files, messageShell);
			canceled = status.isOK() == false;
			return status.isOK();
		}
		return true;
	}
	/**
	 * Checks whether the destination is valid for copying the source files.
	 * <p>
	 * Note this method is for internal use only. It is not API.
	 * </p>
	 *