Bug 315281 update copyrights for 3.6
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/IPipelinedTreeContentProvider.java
/*******************************************************************************
 * Copyright (c) 2006, 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.navigator;
import java.util.Set;
/**
 * 
 * To correctly implement pipelining you should implement
 * {@link IPipelinedTreeContentProvider2} which provides the
 * additional
 * {@link IPipelinedTreeContentProvider2#hasChildren(Object)} method.
 * This allows the calculation of hasChildren to match what will be provided in
 * calculating the children. If you don't implement the hasChildren, you may get
 * "false positive" hasChildrens which will result in a "+" indication in the
 * tree in the event that the pipelined children calculation.
 * 
 * The only reason these are two separate interfaces is historical.
 * 
 * @since 3.2
 * 
 */
public interface IPipelinedTreeContentProvider extends ICommonContentProvider {