Definition register(string $id, string $class = null) Registers a service definition. This methods allows for simple registration of service definition with a fluid interface. Parameters string $id The service identifier string $class The service class Return Value Definition A Definition instance

bool isValid() Returns whether the form and all children are valid. If the form is not submitted, this method always returns false. Return Value bool

bool purge(string $url) Purges data for the given URL. Parameters string $url A URL Return Value bool true if the URL exists and has been purged, false otherwise

bool hasCacheControlDirective(string $key) Returns true if the Cache-Control directive is defined. Parameters string $key The Cache-Control directive Return Value bool true if the directive exists, false otherwise

Response setEtag(string|null $etag = null, bool $weak = false) Sets the ETag value. Parameters string|null $etag The ETag unique identifier or null to remove the header bool $weak Whether you want a weak ETag or not Return Value Response

close() {@inheritdoc}

array scanAliases(string $sourceDir) Returns all locale aliases found in the given directory. Parameters string $sourceDir The directory with ICU files Return Value array An array with the locale aliases as keys and the aliased locales as values

static array getLanguages() Returns all available language codes. Return Value array The language codes Exceptions RuntimeException When the resource bundles cannot be loaded

bool isGlob() Return Value bool

FormInterface getForm() Returns the iterated form. Return Value FormInterface The form whose errors are iterated by this object