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
} else if (event.character == '3') {
				setView(VIEW_ID_SUB);
			}
		}	
	}
	
		
	/**
	 * Returns the inner component in a workbench part.
	 * @see IWorkbenchPart#createPartControl
	 */
	public void createPartControl(Composite container) {
						
		fPagebook= new PageBook(container, SWT.NONE);
						
		
		fTypeMethodsSplitter= new SashForm(fPagebook, SWT.VERTICAL);
		fTypeMethodsSplitter.setVisible(false);
		fTypeViewerViewForm= new ViewForm(fTypeMethodsSplitter, SWT.NONE);
				
		Control typeViewerControl= createTypeViewerControl(fTypeViewerViewForm);
		fTypeViewerViewForm.setContent(typeViewerControl);
				
		fMethodViewerViewForm= new ViewForm(fTypeMethodsSplitter, SWT.NONE);
		fTypeMethodsSplitter.setWeights(new int[] {35, 65});
		
		Control methodViewerPart= createMethodViewerControl(fMethodViewerViewForm);
		fMethodViewerViewForm.setContent(methodViewerPart);
		
		fMethodViewerPaneLabel= new CLabel(fMethodViewerViewForm, SWT.NONE);