Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2599524 by blackra, krknth, jhodgdon, rhett.prichard: Fixing order of documentation sections for /core/lib/Drupal

Issue #2002134 by fago, yched, amateescu, effulgentsia: Move TypedData metadata introspection from data objects to definition objects.