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

Issue #2508884 by EclipseGc, tim.plunkett, dsnopek, japerry, sravya_12, swathin, Wim Leers, Fabianx, dawehner, yched: Make contexts immutable