Merge branch '4.4'

* 4.4:
  [travis] Fix build-packages script
  Add types to constructors and private/final/internal methods (Batch III)
  [HttpClient] Async HTTPlug client
  [Messenger] Allow to configure the db index on Redis transport
  [HttpClient] bugfix exploding values of headers
  [VarDumper] Made all casters final
  [VarDumper] Added a support for casting Ramsey/Uuid
  Remove useless testCanCheckIfTerminalIsInteractive test case
  [Validator] Add the missing translations for the Thai (\"th\") locale
  [Routing] gracefully handle docref_root ini setting
  [Validator] Fix ValidValidator group cascading usage

Author: nicolas-grekas

Command/ContainerDebugCommand.php

@@ -233,7 +233,7 @@ protected function getContainerBuilder(): ContainerBuilder
         return $this->containerBuilder = $container;
     }
 
-    private function findProperServiceName(InputInterface $input, SymfonyStyle $io, ContainerBuilder $builder, string $name, bool $showHidden)
+    private function findProperServiceName(InputInterface $input, SymfonyStyle $io, ContainerBuilder $builder, string $name, bool $showHidden): string
     {
         $name = ltrim($name, '\\');
 
@@ -253,7 +253,7 @@ private function findProperServiceName(InputInterface $input, SymfonyStyle $io,
         return $io->choice('Select one of the following services to display its information', $matchingServices);
     }
 
-    private function findServiceIdsContaining(ContainerBuilder $builder, string $name, bool $showHidden)
+    private function findServiceIdsContaining(ContainerBuilder $builder, string $name, bool $showHidden): array
     {
         $serviceIds = $builder->getServiceIds();
         $foundServiceIds = $foundServiceIdsIgnoringBackslashes = [];
@@ -275,7 +275,7 @@ private function findServiceIdsContaining(ContainerBuilder $builder, string $nam
     /**
      * @internal
      */
-    public function filterToServiceTypes($serviceId)
+    public function filterToServiceTypes(string $serviceId): bool
     {
         // filter out things that could not be valid class names
         if (!preg_match('/(?(DEFINE)(?<V>[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+))^(?&V)(?:\\\\(?&V))*+(?: \$(?&V))?$/', $serviceId)) {

Controller/AbstractController.php

@@ -62,7 +62,7 @@ abstract class AbstractController implements ServiceSubscriberInterface
      * @internal
      * @required
      */
-    public function setContainer(ContainerInterface $container)
+    public function setContainer(ContainerInterface $container): ?ContainerInterface
     {
         $previous = $this->container;
         $this->container = $container;