builder.addAttribute(GD_KIND);
builder.addElement(ID);
builder.addElement(PUBLISHED);
builder.addElement(UPDATED);
builder.addElement(Edited.KEY);
builder.addElement(Control.KEY);
builder.addElement(Category.KEY);
builder.addElement(TITLE);
builder.addElement(SUMMARY);
builder.addElement(RIGHTS);
builder.addElement(Content.KEY).adapt(TextContent.KIND,