Bug 296691 Change new Groups API to Virtual Resource API
If we decide that 'virtual' is the right naming for new resources concept, I will make the following changes. Add IResource#VIRTUAL flag to use in #create methods Add IResource#isVirtual indicating that a resource is virtual Remove IResource#isGroup Remove IFolder#createGroup
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
if (!status.isOK()) {
			if (errorStatus == null) {
				errorStatus = new MultiStatus(PlatformUI.PLUGIN_ID,
						IStatus.ERROR, getProblemsMessage(), null);
			}
			errorStatus.merge(status);
		}
	}
	/**
	 * Records the core exception to be displayed to the user once the action is
	 * finished.
	 * 
	 * @param error
	 *            a <code>CoreException</code>
	 */
	private void recordError(CoreException error) {
		if (errorStatus == null) {
			errorStatus = new MultiStatus(PlatformUI.PLUGIN_ID, IStatus.ERROR,
					getProblemsMessage(), error);
		}
		errorStatus.merge(error.getStatus());
	}
	/**
	 * Checks whether the destination is valid for copying the source resources.
	 * <p>
	 * Note this method is for internal use only. It is not API.
	 * </p>
	 * 
	 * @param destination
	 *            the destination container