Bug 7127 'refactor' menu missing from the type hierarchy perspective
the 'refactor' menu is missing from the type hierarchy perspective
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/JavaUI.java
* (value <code>"org.eclipse.jdt.ui.JavaActionSet"</code>).
	 */
	public static final String ID_ACTION_SET= 		"org.eclipse.jdt.ui.JavaActionSet"; 
	
	/**
	 * The editor part id of the editor that presents Java compilation units
	 * (value <code>"org.eclipse.jdt.ui.CompilationUnitEditor"</code>).
	 */	
	public static final String ID_CU_EDITOR=			"org.eclipse.jdt.ui.CompilationUnitEditor"; 
	
	/**
	 * The editor part id of the editor that presents Java binary class files
	 * (value <code>"org.eclipse.jdt.ui.ClassFileEditor"</code>).
	 */
	public static final String ID_CF_EDITOR=			"org.eclipse.jdt.ui.ClassFileEditor"; 
	
	/**
	 * The editor part id of the code snippet editor
	 * (value <code>"org.eclipse.jdt.ui.SnippetEditor"</code>).
	 */
	public static final String ID_SNIPPET_EDITOR= 		"org.eclipse.jdt.ui.SnippetEditor"; 
	/**
	 * The view part id of the Packages view
	 * (value <code>"org.eclipse.jdt.ui.PackageExplorer"</code>).
	 * <p>
	 * When this id is used to access
	 * a view part with <code>IWorkbenchPage.findView</code> or 
	 * <code>showView</code>, the returned <code>IViewPart</code>
	 * can be safely cast to an <code>IPackagesViewPart</code>.
	 * </p>