I have a doubt. I want to run k8s job using backend plugin(not with agents), so developing it. I will pass k8s job spec from flytekit and that will be received by backend plugin to deploy on k8s. Doubt is, will backend plugin directly going to talk to k8s to deploy my job? or it will create a Intermediate pod to submit my job spec to k8s? I'm doing it to understand how backend plugins work, so to contribute more in the future related k8s objects.

You can do anything with the backend plugin - so you can directly call k8s apis to deploy the job

so in the case I need send empty image_config to get_custom method?