Bug 48501 Merge undo, redo, move and rename with Platform UI [refactoring]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerActionGroup.java
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.OpenStrategy;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.OpenEvent;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.IWorkingSetManager;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.actions.ActionGroup;
import org.eclipse.ui.actions.MoveResourceAction;
import org.eclipse.ui.actions.OpenInNewWindowAction;
import org.eclipse.ui.actions.RenameResourceAction;
import org.eclipse.ui.views.framelist.BackAction;
import org.eclipse.ui.views.framelist.ForwardAction;
import org.eclipse.ui.views.framelist.FrameAction;
import org.eclipse.ui.views.framelist.FrameList;
import org.eclipse.ui.views.framelist.GoIntoAction;
import org.eclipse.ui.views.framelist.UpAction;
import org.eclipse.jdt.core.IClassFile;
import org.eclipse.jdt.core.ICompilationUnit;