Bug 66635 AddImportOnSelectionAction passes null process monitor to all types cache
I20040611_0100 Title says it all. We should avoid passing in null since the operation can take a while.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/AddImportOnSelectionAction.java
/*******************************************************************************
 * Copyright (c) 2000, 2004 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
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.ui.javaeditor;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextSelection;