SA-CORE-2023-005 by benjifisher, Heine, cmlara, mlhess, larowlan, David_Rothstein, xjm, Wim Leers, DamienMcKenna, effulgentsia, pwolanin, mcdruid, poker10, jenlampton, longwave, kim.pepper, alexpott, drumm

Issue #3177120 by anmolgoyal74, Pooja Ganjage, paulocs, markdorison, walangitan, longwave: Remove references to WebTestBase

Issue #3034072 by kim.pepper, Berdir, alexpott, jibran, larowlan, claudiu.cristea: Move file uri/scheme functions from file.inc and FileSystem to StreamWrapperManager

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

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

Issue #2572695 by marvin_B8, attiks, pfrenssen, xjm: Fix 'Drupal.ControlStructures.ElseIf' coding standard

Issue #2392559 by mondrake, mitrpaka, JeroenT, rpayanm, adci_contributor, ianthomas_uk: Remove all uses of file_stream_wrapper_get_* and file_get_stream_wrappers

Issue #2050759 by tim.plunkett, fietserwin: Move drupal_chmod and other code in file.inc to a Drupal\Core\File\FileSystem class

Issue #2353357 by Berdir: hook_stream_wrappers_alter() is broken since modules are not loaded on demand, also change to an event since it's the last hook that forces this during bootstrap

Issue #2028109 by tim.plunkett, almaudoh, twistor, larowlan, slashrsm, Berdir, Arla, neclimdul, Cottser: Convert hook_stream_wrappers() to tagged services.