Symfony\Component\DependencyInjection\ContainerBuilder::setAliases PHP Method

    public function setAliases(array $aliases)
    {
        $this->aliasDefinitions = array();
        $this->addAliases($aliases);
    }

 /**
  * Processes the ContainerBuilder to resolve parameter placeholders.
  *
  * @param ContainerBuilder $container
  *
  * @throws ParameterNotFoundException
  */
 public function process(ContainerBuilder $container)
 {
     $parameterBag = $container->getParameterBag();
     foreach ($container->getDefinitions() as $id => $definition) {
         try {
             $definition->setClass($parameterBag->resolveValue($definition->getClass()));
             $definition->setFile($parameterBag->resolveValue($definition->getFile()));
             $definition->setArguments($parameterBag->resolveValue($definition->getArguments()));
             if ($definition->getFactoryClass(false)) {
                 $definition->setFactoryClass($parameterBag->resolveValue($definition->getFactoryClass(false)));
             }
             $factory = $definition->getFactory();
             if (is_array($factory) && isset($factory[0])) {
                 $factory[0] = $parameterBag->resolveValue($factory[0]);
                 $definition->setFactory($factory);
             }
             $calls = array();
             foreach ($definition->getMethodCalls() as $name => $arguments) {
                 $calls[$parameterBag->resolveValue($name)] = $parameterBag->resolveValue($arguments);
             }
             $definition->setMethodCalls($calls);
             $definition->setProperties($parameterBag->resolveValue($definition->getProperties()));
         } catch (ParameterNotFoundException $e) {
             $e->setSourceId($id);
             throw $e;
         }
     }
     $aliases = array();
     foreach ($container->getAliases() as $name => $target) {
         $aliases[$parameterBag->resolveValue($name)] = $parameterBag->resolveValue($target);
     }
     $container->setAliases($aliases);
     $parameterBag->resolve();
 }