Issue #2894584 by tedbow, drpal, Wim Leers, xjm: Settings Tray provides...

Issue #2894584 by tedbow, drpal, Wim Leers, xjm: Settings Tray provides functionality, not an API: mark everything (PHP+JS+CSS+HTML) as @internal

core/modules/outside_in/js/off-canvas.es6.js

@@ -5,6 +5,8 @@
  * @todo This functionality should extracted into a new core library or a part
  *  of the current drupal.dialog.ajax library.
  *  https://www.drupal.org/node/2784443
+ *
+ * @private
  */
 
 (function ($, Drupal, debounce, displace) {

core/modules/outside_in/js/outside_in.es6.js

 /**
  * @file
  * Drupal's Settings Tray library.
+ *
+ * @private
  */
 
 (function ($, Drupal) {

core/modules/outside_in/src/Ajax/OpenOffCanvasDialogCommand.php

@@ -8,6 +8,8 @@
  * Defines an AJAX command to open content in a dialog in a off-canvas dialog.
  *
  * @ingroup ajax
+ *
+ * @internal
  */
 class OpenOffCanvasDialogCommand extends OpenDialogCommand {
 

core/modules/outside_in/src/Block/BlockEntityOffCanvasForm.php

@@ -13,6 +13,8 @@
  *
  * This form removes advanced sections of regular block form such as the
  * visibility settings, machine ID and region.
+ *
+ * @internal
  */
 class BlockEntityOffCanvasForm extends BlockForm {
 

core/modules/outside_in/src/Form/SystemBrandingOffCanvasForm.php

@@ -12,6 +12,8 @@
  * The off-canvas form handler for the SystemBrandingBlock.
  *
  * @see outside_in_block_alter()
+ *
+ * @internal
  */
 class SystemBrandingOffCanvasForm extends PluginFormBase implements ContainerInjectionInterface {
 

core/modules/outside_in/src/Form/SystemMenuOffCanvasForm.php

@@ -19,6 +19,8 @@
  * The off-canvas form handler for the SystemMenuBlock.
  *
  * @see outside_in_block_alter()
+ *
+ * @internal
  */
 class SystemMenuOffCanvasForm extends PluginFormBase implements ContainerInjectionInterface {
 

core/modules/outside_in/src/Render/MainContent/OffCanvasRenderer.php

@@ -12,6 +12,8 @@
 
 /**
  * Default main content renderer for off-canvas dialog requests.
+ *
+ * @internal
  */
 class OffCanvasRenderer extends DialogRenderer {