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/*******************************************************************************
* Copyright (c) 2007 Oracle Corporation.
* 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:
* Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.common.metadata.internal;
/**
* Allows {@link IMetaDataObserver}s to observe changes.
* Experimental.
*
*/
public interface IMetaDataObservable {
/**
* Add the observer to the set of observers. Has no effect if
* the same observer is already registered
*
* @param observer
*/
public void addObserver(IMetaDataObserver observer);
/**
* Remove the observer from the set of observers. Has no effect
* if observer was not already registered.
*
* @param observer must not be null
*/
public void removeObserver(IMetaDataObserver observer);
}
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