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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/*******************************************************************************
 * Copyright (c) 2004, 2015 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.runtime.preferences;

/**
 * Clients contributing a scope to the Eclipse preference system must
 * implement this interface to aid Eclipse in creating a new node for the
 * hierarchy.
 * 
 * Clients may implement this interface.
 * 
 * @since 3.0
 */
public interface IScope {

	/**
	 * Create and return a new preference node with the given parent and name.
	 * Must not return null. Clients are able to create a new node
	 * in memory or load the node's contents from the backing store. Neither the
	 * parent or name arguments should be null.
	 * 
	 * Implementors should note that the node might not have been added to the
	 * child list of the parent yet, and therefore might not be able to be referenced
	 * through navigation from the root node.
	 * 
	 * @param parent the node's parent
	 * @param name the name of the node
	 * @return the new node
	 */
	public IEclipsePreferences create(IEclipsePreferences parent, String name);
}