func (pb podBuilder) withPVCSVolume(pvcs []*v1.PersistentVolumeClaim) podBuilder {
	for i, pvc := range pvcs {
		pb.withPVCVolume(pvc.Name, fmt.Sprintf("vol%v", i))
	}
	return pb
}

func (pb podBuilder) withEmptyDirVolume() podBuilder {
	pb.Pod.Spec.Volumes = append(pb.Pod.Spec.Volumes, v1.Volume{
		VolumeSource: v1.VolumeSource{
			EmptyDir: &v1.EmptyDirVolumeSource{},
		},
	})
	return pb
}