uiPortalApp.setModeState(UIPortalApplication.APP_BLOCK_EDIT_MODE);
UIWorkingWorkspace uiWorkingWS = uiPortalApp.findFirstComponentOfType(UIWorkingWorkspace.class);
UIEditInlineWorkspace editInlineWS = uiWorkingWS.getChild(UIEditInlineWorkspace.class);
//Clone a UIPage object, that is required for Abort action
UIPage uiPage = editInlineWS.createUIComponent(UIPage.class, null, null);
PortalDataMapper.toUIPage(uiPage, page);
UIPageBody uiPageBody = uiPortalApp.findFirstComponentOfType(UIPageBody.class);
if (uiPageBody.getUIComponent() != null)
uiPageBody.setUIComponent(null);