reason to as this is, my get-custom method expects settings object where image_config is mandatory. I'm not sure what this image is for?

from dataclasses import dataclass
from typing import Callable, Dict, Optional, Any

from flytekit import PythonFunctionTask
from flytekit.configuration import SerializationSettings
from flytekit.exceptions import user as _user_exceptions
from flytekit.extend import TaskPlugins
from kubernetes import client as k8s_client

@dataclass
class Job:
    """
    This class defines the custom options available for a Job task.
    """
    job_spec: k8s_client.V1Job
    metadata: Optional[k8s_client.V1ObjectMeta] = None

    def __post_init__(self):
        if not self.job_spec:
            raise _user_exceptions.FlyteValidationException("A job spec cannot be undefined")

class JobFunctionTask(PythonFunctionTask[Job]):
    def __init__(self, task_config: Job, task_function: Callable, namespace: str = "default", **kwargs):
        super(JobFunctionTask, self).__init__(
            task_config=task_config,
            task_type="job",
            task_function=task_function,
            **kwargs
        )
        self.namespace = namespace

    def get_custom(self, settings: SerializationSettings) -> Optional[Dict[str, Any]]:
        # Serialize the job spec to a dictionary
        job_dict = self.task_config.job_spec.to_dict()

        # Add metadata if it exists
        if self.task_config.metadata:
            job_dict['metadata'] = self.task_config.metadata.to_dict()

        return job_dict

# Register the custom task plugin
TaskPlugins.register_pythontask_plugin(Job, JobFunctionTask)