final AbstractUISheet sheet = (AbstractUISheet) getLayoutContainer();
final UIComponent header = sheet.getHeader();
final LayoutTokens columns = new LayoutTokens();
final List<AbstractUIColumn> renderedColumns = sheet.getRenderedColumns();
for (AbstractUIColumn ignored : renderedColumns) {
columns.addToken(RelativeLayoutToken.DEFAULT_INSTANCE);
}
final LayoutTokens rows = new LayoutTokens();
rows.addToken(AutoLayoutToken.INSTANCE);
final Grid grid = new Grid(columns, rows);