/** * Creates a new namespace. * * @param string $namespaceName The name of the namespace to create. * * @return \Doctrine\DBAL\Schema\Schema This schema instance. */ public function createNamespace($namespaceName) { $unquotedNamespaceName = strtolower($this->getUnquotedAssetName($namespaceName)); if (isset($this->namespaces[$unquotedNamespaceName])) { throw SchemaException::namespaceAlreadyExists($unquotedNamespaceName); } $this->namespaces[$unquotedNamespaceName] = $namespaceName; return $this; }