code: public static Layout parseResource(String resource) {
          int i = resource.indexOf(":");
  
          if (i > 0) {
              String loaderId = resource.substring(0, i);
              ILayoutLoader layoutLoader = LayoutLoaderRegistry.getInstance().get(loaderId);
  
              if (layoutLoader != null) {
                  String name = resource.substring(i + 1);
                  return layoutLoader.loadLayout(name);
              }
          }
  
          InputStream strm = ExecutionContext.getSession().getServletContext().getResourceAsStream(resource);
          
          if (strm == null) {
              throw new CWFException("Unable to locate layout resource: " + resource);
          }
          
          return parseStream(strm);
      }
docs: Loads a layout from the specified resource, using a registered layout loader or, failing
  that, using the default loadFromUrl method.
  
  @param resource The resource to be loaded.
  @return The loaded layout.