code: public void buildInitialLayout(PageLayoutBuilder pageLayout) {
  		for (Iterator iter = _viewDescriptors.iterator(); iter.hasNext();) {
  			String viewDescriptorId = (String) iter.next();
  			pageLayout.addView(viewDescriptorId); 
  		}
  	}
docs: Builds the initial page layout by iterating the
  collection of view descriptors.