How to use the databand.dbnd_config.config_layer_context function in databand

def build_airflow_operator(self, task_cls, call_args, call_kwargs):
        if try_get_databand_context() is self.dbnd_context:
            # we are already in the context of build
            return self._build_airflow_operator(
                task_cls=task_cls, call_args=call_args, call_kwargs=call_kwargs
            )

        # we are coming from external world
        with dbnd_config.config_layer_context(
            self.dbnd_config_layer
        ) as c, DatabandContext.context(_context=self.dbnd_context) as dc:
            return self._build_airflow_operator(
                task_cls=task_cls, call_args=call_args, call_kwargs=call_kwargs
            )