code: @Override
  	    public void init(ICommonActionExtensionSite aSite) {
  	        super.init(aSite);
  	        shell = aSite.getViewSite().getShell();
  	        makeActions();
  	    }
docs: /*
  (non-Javadoc)
  @see
  org.eclipse.ui.navigator.CommonActionProvider#init(org.eclipse.ui.navigator.ICommonActionExtensionSite)