Radio button in additional Channel Information

I want to add radio button parameter to ChannelInfo. According to http://www.onehippo.org/library/concepts/channels/additional-channel-information.html there are some additional annotations for more complex widgets.
However, I did not find anything similar to http://selection.forge.onehippo.org/screenshots.html RadioGroup or BooleanRadioGroup.

Here is the corresponding discussion in Hippo Community Google Group:
https://groups.google.com/forum/#!topic/hippo-community/SAuN6sEKI34