def get_readonly_fields(self, request, obj=None):
        return list(self.readonly_fields) + \
               [field.name for field in obj._meta.fields]
Cleanup operations like deleting port group if no instance
dataset/ETHPy150Open Koed00/django-q/django_q/admin.py/TaskAdmin.get_readonly_fields--crossover with--dataset/ETHPy150Open nii-cloud/dodai-compute/nova/virt/vmwareapi/vif.py/VMWareVlanBridgeDriver.unplug