Issue #2533220 by snehi, pjonckiere, mirom, chx, jhodgdon, dawehner: RouteBuilderInterface has no docblock
Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits
Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files
Issue #2158571 by tstoeckler, dawehner, kgoel, tim.plunkett, catch, effulgentsia: Routes added in RouteSubscribers cannot be altered.
Issue #2164367 by alexpott, tim.plunkett, dawehner: Rebuild router as few times as possible per request.