We are planning to add a new option in the official Mobile app "Calendar events" so we need to add the core_calendar_get_calendar_events to the mobile service in order to be able to consume that webservice from the mobile app

To clarify, the function already exists, we are going to only the name of the function in the mobile service settings

I'm going to request backport of this configuration change to 2.5 and 2.6, this is not a bug and not a new feature

I raised a policy ticket asking about how to proceed but it still not answered see https://tracker.moodle.org/browse/MDL-43847