Bug 25827 Disposing of MemberFilterActionGroup
Build 2.0.2 and 2.1 When investigating an editor memory leak PR we found out that this group has a dispose method which is never called. When we then called from the editor it throw an exeption (viewer was disposed). Don't know if the group really needs dispose() if so it should get called.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
private PageBook fViewerbook;
	private PageBook fPagebook;
	
	private Label fNoHierarchyShownLabel;
	private Label fEmptyTypesViewer;
	
	private ViewForm fTypeViewerViewForm;
	private ViewForm fMethodViewerViewForm;
	
	private CLabel fMethodViewerPaneLabel;
	private JavaUILabelProvider fPaneLabelProvider;
	
	private IDialogSettings fDialogSettings;
	
	private ToggleViewAction[] fViewActions;
	
	private HistoryDropDownAction fHistoryDropDownAction;
	
	private ToggleOrientationAction[] fToggleOrientationActions;
	private int fCurrentOrientation;
	
	private EnableMemberFilterAction fEnableMemberFilterAction;
	private AddMethodStubAction fAddStubAction;
	private FocusOnTypeAction fFocusOnTypeAction;
	private FocusOnSelectionAction fFocusOnSelectionAction;
	
	private IPartListener fPartListener;
	
	private CompositeActionGroup fActionGroups;
	private CCPActionGroup fCCPActionGroup;