Extracted from patchset 29...28 of If96a0df1ef.
Also adds sorting functionality to sub_created
using the existing index on sub_id.
Bug: T294162
Change-Id: Ic4702c8c5a8119d9cdb4c3c99cf110626694777f
While in many cases the class will never be sub-classed, it's easier
just to always use static:: and not worry about predicting which
classes might have problems in the future.
Change-Id: I23072a1701b5acf62bb3379a877de97627d8fcf3
This doesn't sort by the topic name, but the hidden
sub_id field, leading to a confusing order.
Bug: T273342
Change-Id: I6146abf05544d40c9ef0d2e8c58d020e5a5fa8a2