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Check if the connection to Azure Database for PostgreSQL is valid and required extensions are installed.

:param conn: Async connection to the Azure Database for PostgreSQL. :type conn: AsyncConnection :param required_extensions: List of required extensions to check if they are installed. :type required_extensions: list[Extension] :raises RuntimeError: If the connection check fails or required extensions are not installed.

Create required extensions in the Azure Database for PostgreSQL connection.

:param conn: Async connection to the Azure Database for PostgreSQL. :type conn: AsyncConnection :param required_extensions: List of required extensions to create. :type required_extensions: list[Extension] :raises Exception: If the connection is not valid or if an error occurs during extension creation.

Async connection pool for Azure Database for PostgreSQL connections.

Base connection information for Azure Database for PostgreSQL connections.

:param host: Hostname of the Azure Database for PostgreSQL server. :type host: str | None :param dbname: Name of the database to connect to. :type dbname: str :param port: Port number for the connection. :type port: int :param credentials: Credentials for authentication. :type credentials: BasicAuth | AsyncTokenCredential :param sslmode: SSL mode for the connection. :type sslmode: SSLMode