PageContext pageContext = renderTag.getPageContext();
LayoutContext previous = lookup(pageContext);
if (previous == null) {
// Create a new layout writer and push a new body
context.out = new LayoutWriter(pageContext.getOut());
pageContext.pushBody(context.out);
}
else {
// Sanity check
if (previous.next != null) {
throw new StripesRuntimeException(