(Glue 3.0 / Glue 4.0) How do you use 'useConnectionProperties' and 'connectionName' when opening a JDBC connection?

The Glue JDBC Connection documentation states:

If you already have a JDBC connection defined, you can reuse the configuration properties defined in it, such as: url, user and password; so you don't have to specify them in the code as connection options. To do so, use the following connection properties:

• "useConnectionProperties": Set it to "true" to indicate you want to use the configuration from a connection.
• "connectionName": Enter the connection name to retrieve the configuration from, the connection must be defined in the same region as the job.

There is no further documentation of how to use these properties. I have tried to set these properties as kwargs to glueContext.create_dynamic_frame.from_options(), but the method continues to throw an error if url is not specified in connectionOptions:

dbtable = 'schema.table'
query = f"select top 1 * from {dbtable}"

dyf = glueContext.create_dynamic_frame.from_options(connection_type="sqlserver", 
                                                    useConnectionProperties="true", 
                                                    connectionName="My-Glue-Connection",
                                                                        connection_options={
                                                                            "dbtable": dbtable,
                                                                            "sampleQuery": query
                                                                        })
Py4JJavaError: An error occurred while calling o212.getDynamicFrame.
: java.util.NoSuchElementException: key not found: url
	at scala.collection.MapLike$class.default(MapLike.scala:228)
	at scala.collection.AbstractMap.default(Map.scala:59)
	at scala.collection.MapLike$class.apply(MapLike.scala:141)
	at scala.collection.AbstractMap.apply(Map.scala:59)
	at com.amazonaws.services.glue.util.JDBCWrapper$.apply(JDBCUtils.scala:913)
	at com.amazonaws.services.glue.util.JDBCWrapper$.apply(JDBCUtils.scala:909)
	at com.amazonaws.services.glue.JDBCDataSource.getDynamicFrame(DataSource.scala:943)
	at com.amazonaws.services.glue.DataSource$class.getDynamicFrame(DataSource.scala:97)
	at com.amazonaws.services.glue.SparkSQLDataSource.getDynamicFrame(DataSource.scala:709)
	...

The same error occurs if I pass the two properties via connection_options:

dyf = glueContext.create_dynamic_frame.from_options(connection_type="sqlserver", 
                                                        connection_options={
                                                            "useConnectionProperties": "true", 
                                                            "connectionName": "IDAP-Glue-Connection",
                                                            "dbtable": dbtable,
                                                            "sampleQuery": query
                                                        })
Py4JJavaError: An error occurred while calling o123.getDynamicFrame.
: java.util.NoSuchElementException: key not found: url
...

How is this feature intended to be used? The only methods I've found to use a Glue Connection to read from a JDBC database are really unwieldy, I would expect tighter integration of Glue Connections in Glue Jobs.