Issue #3232018 by leksat, prudloff, acbramley, smustgrave, larowlan: Trigger a deprecation when using \Drupal\Core\Cache\RefinableCacheableDependencyTrait::addCacheableDependency with a non CacheableDependencyInterface object

Issue #3508581 by annmarysruthy, borisson_: Fix Drupal.Commenting.FunctionComment.Missing in Kernel tests

Issue #3508513 by annmarysruthy, quietone, smustgrave, borisson_: Fix Drupal.Commenting.FunctionComment.Missing in Functional tests

Issue #3504776 by quietone, annmarysruthy, vighneshh, oily, smustgrave, borisson_: Fix Drupal.Commenting.FunctionComment.MissingReturnComment in extension tests

Issue #3490948 by rowrowrowrow, bbrala: Change hardcoded entity key 'uid' to getKey in ResourceTestBase

Issue #3483146 by nicxvan, sourav_paul, vladimiraus, mstrelan, smustgrave: Add string return type to all hook_help implementations

Issue #3488823 by mstrelan, shalini_jha, smustgrave, nicxvan: Add void return to @ingroup entity_crud hook implementations

Issue #3495966 by nikolay shapovalov, nicxvan, smustgrave, berdir: Deprecate and replace entity_test_create_bundle(), entity_test_delete_bundle()

Issue #3503744 by quietone, borisson_: Fix 'Drupal.Commenting.VariableComment.MissingVar' in module and profile tests

Issue #3498059 by mstrelan, shalini_jha, hetal.solanki: Add array return to all hook_requirements implementations

Issue #3477634 by mondrake, daffie: Ensure run-tests.sh and PHPUnit CLI run with the same list of tests to be executed

Issue #3477156 by quietone, mstrelan, alexpott: Use DrupalPractice.CodeAnalysis.VariableAnalysis on Functional* tests

Issue #3488109 by mstrelan, quietone: Add AccessResultInterface return type to hook_entity_access (and friends) implementations

Issue #3031367 by bradjones1, bbrala, gabesullice, wim leers, larowlan, alexpott: Generate JSON schema for content entity types

Issue #3100732 by bbrala, bradjones1, mglaman, wim leers, ptmkenny, ranjith_kumar_k_u, plach, larowlan, joachim, claudiu.cristea: Allow specifying metadata on JSON:API objects

Issue #2842949 by quietone, rigoucr, arunkumark, gaurav.kapoor, timmillwood, harsha012: Fix Drupal.Commenting.DocComment.SpacingBeforeTags coding standard

Issue #3490964 by nexusnovaz, mstrelan: Add array return to all hook_jsonapi_ENTITY_TYPE_filter_access hook implementations

Issue #3489519 by mstrelan, smustgrave, quietone: Add void return to module and theme install/uninstall hook implementations

Issue #3416522 by catch, alexpott, longwave, phenaproxima, nicxvan, wim leers, smustgrave, larowlan, berdir, godotislate, dww: Add the ability to install multiple modules and only do a single container rebuild to ModuleInstaller

Issue #3278759 by mxr576, kristiaanvandeneynde, acbramley, danflanagan8, larowlan, bbrala: Access cacheability is not correct when "view own unpublished content" is in use

Issue #3473374 by mxr576, bbrala, kristiaanvandeneynde: Improve Dynamic Page Cache header assertions in JSON:API tests

Issue #3483599 by nicxvan, ghost of drupal past, catch, longwave, fabianx: Convert all procedural hook implementations to Hook classes