In change I7a3d7b6e which was recently merged, the ApiPageSet
module received a major overhaul. In particular, the parameters to the
constructor have changed, and it now extends ApiBase rather than
ApiQueryBase. These changes will not affect API clients, but any
third-party API modules that use ApiPageSet will need to be updated.
Also as part of this change, ApiQuery is losing its newGenerator() and
executeGeneratorModule() methods, and ApiQueryGeneratorBase's
setGeneratorMode() is gaining a required parameter. These methods are
unlikely to have been used in non-core code.
This brings with it enhanced functionality: non-query actions using
ApiPageSet may now use generators. The core action=purge and
action=setnotificationtimestamp modules have already been enhanced in
This change should go live on WMF wikis with 1.21wmf10; see the
roadmap for details.