Where is the source code for JNI methods of Visualization package?

I'm curious to understand the implementation of the DataTable class of com.google.gwt.visualization.client, but I discovered that most of its methods are implemented in native code.

But the SVN repository at http://code.google.com/p/google-web-toolkit/ does not seem to host the implementation of these native methods. Are they not made public? If not, is it on purpose or due to oversight?

Thanks.

--
You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscribe@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.