Bug 45448 Operation unavailable attempting to search a local variable [search]
Build 20031023 Selecting a local variable declaration in a Java editor and attempting to search for references to this local variable brings up a dialog saying the the operation is unavailable for the selected element.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/FindReferencesAction.java
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 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
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 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.jdt.ui.actions;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.help.WorkbenchHelp;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IField;