quietone
--- a/core/lib/Drupal/Core/Extension/ThemeHandlerInterface.php
+++ b/core/lib/Drupal/Core/Extension/ThemeHandlerInterface.php
   * directories.
   *
   * @return array
+   *   An associative array of the directory path for all installed themes.
--- a/core/lib/Drupal/Core/Cache/PhpBackend.php
+++ b/core/lib/Drupal/Core/Cache/PhpBackend.php
   *   has been invalidated.
   *
   * @return bool|mixed
+   *   The requested cached item. Defaults to FALSE if the cache is not set.
--- a/core/lib/Drupal/Core/Ajax/OpenDialogCommand.php
+++ b/core/lib/Drupal/Core/Ajax/OpenDialogCommand.php
   * Returns the dialog options.
   *
   * @return array
+   *   Am array of the dialog-specific options passed directly to jQuery UI