Latest version of com.google.appengine:appengine-api-stubs
https://javadoc.io/doc/com.google.appengine/appengine-api-stubs
Current version 1.9.90
https://javadoc.io/doc/com.google.appengine/appengine-api-stubs/1.9.90
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.google.appengine/appengine-api-stubs/1.9.90/package-list