where is org.apache.slide.admin.AdminAction

Hello,

I have a code here that was developed 2 years ago using slide as a back
end. However, today, during recompilation of a jar (we use maven to
automatically update our project), we noticed some class have
disappeared. I need to find, in slide, in which library the class
org.apache.slide.admin.AdminAction has been moved. (Has this struts
framework been renamed, moved, is there doc on how to replace existing
code based on it?)