Packages
com.google.appengine.api.datastore
com.google.appengine.api.images
com.google.appengine.api.labs.taskqueue
com.google.appengine.api.mail
com.google.appengine.api.memcache
com.google.appengine.api.quota
com.google.appengine.api.urlfetch
com.google.appengine.api.users
com.google.appengine.api.xmpp