def connect_async(self, connection_id, connection_string, callback):
        """Asynchronously connect to a device

        Args:
            connection_id (int): A unique identifier that will refer to this connection
            connection_string (string): A DeviceAdapter specific string that can be used to connect to
                a device using this DeviceAdapter.
            callback (callable): A function that will be called when the connection attempt finishes as
                callback(connection_id, adapter_id, success: bool, failure_reason: string or None)
        """

        if callback is not None:
            callback(connection_id, self.id, False, "connect command is not supported in device adapter")