src/ServiceContainer/SymfonyApiExtension.php
public function initialize(ExtensionManager $extensionManager)
    {
        $symfonyExtension = $extensionManager->getExtension('fob_symfony');

        if (null === $symfonyExtension) {
            throw new ExtensionInitializationException(sprintf('The %s extension must be enabled for this extension to function.', SymfonyExtension::class), $this->getConfigKey());
        }
    }
public function initialize(ExtensionManager $extensionManager)
    {
        $symfonyExtension = $extensionManager->getExtension('fob_symfony');

        if (null === $symfonyExtension) {
            throw new ExtensionInitializationException(sprintf('The %s extension must be enabled for this extension to function.', SymfonyExtension::class), $this->getConfigKey());
        }
    }
public function initialize ( ExtensionManager $ extensionManager ) { $ symfonyExtension = $ extensionManager -> getExtension ( 'fob_symfony' ) ; if ( null === $ symfonyExtension ) { throw new ExtensionInitializationException ( sprintf ( 'The %s extension must be enabled for this extension to function.' , SymfonyExtension :: class ) , $ this -> getConfigKey ( ) ) ; } }
Initializes other extensions.

This method is called immediately after all extensions are activated but
before any extension `configure()` method is called. This allows extensions
to hook into the configuration of other extensions providing such an
extension point.

@param ExtensionManager $extensionManager
Initializes other extensions .