MarkupBuilder combining attributes and content

How can I use MarkupBuilder to generate html elements that have both 
attributes and content?

I can't seem to locate any examples anywhere, but it's such an 
essential case I'm sure it's supported.

Eg:   <td class="foo">some content here</td>

mb = new MarkupBuilder()
mb.td(class:"foo")  // yields <td class='foo' />
mb.td("some content here")  // yields <td>some content here</td>
mb.td(class:"foo", "some content here") // yields <td class='foo' />

I believe there was an example on the wiki here  
http://wiki.codehaus.org/groovy/TreeBasedSyntax  but that page seems to 
have disappeared today - at least it's been inaccessible to me since 
this afternoon.