Example of Updating ConfigMap name in Client-go

Option 1:

o.pgreplicamaster.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.LocalObjectReference = corev1.LocalObjectReference{Name: o.UserSpecifiedCM}

is doing the same thing as

Option 2:

o.pgreplicamaster.Spec.Template.Spec.Volumes = []corev1.Volume{
{Name: "pgreplica-config",
VolumeSource: corev1.VolumeSource{
   ConfigMap: &corev1.ConfigMapVolumeSource{
    LocalObjectReference: corev1.LocalObjectReference{Name: o.UserSpecifiedCM},
   },
   },
 
},
}

fmt.Printf("%#v\n",o.pgreplicamaster.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.LocalObjectReference)