protected void revertImmutableChanges(PersistentVolumeClaim current, PersistentVolumeClaim desired)   {
        desired.getSpec().setVolumeName(current.getSpec().getVolumeName());
        desired.getSpec().setStorageClassName(current.getSpec().getStorageClassName());
        desired.getSpec().setAccessModes(current.getSpec().getAccessModes());
        desired.getSpec().setSelector(current.getSpec().getSelector());
        desired.getSpec().setDataSource(current.getSpec().getDataSource());
    }
@Test
    public void testRevertingImmutableFields()   {
        PersistentVolumeClaim desired = new PersistentVolumeClaimBuilder()
                .withNewMetadata()
                    .withName("my-pvc")
                    .withNamespace("my-namespace")
                .endMetadata()
                .withNewSpec()
                    .withNewResources()
                        .withRequests(Collections.singletonMap("storage", new Quantity("100", null)))
                    .endResources()
                .endSpec()
                .build();

        PersistentVolumeClaim current = new PersistentVolumeClaimBuilder()
                .withNewMetadata()
                    .withName("my-pvc")
                    .withNamespace("my-namespace")
                .endMetadata()
                .withNewSpec()
                    .withAccessModes("ReadWriteOnce")
                    .withNewResources()
                        .withRequests(Collections.singletonMap("storage", new Quantity("10", null)))
                    .endResources()
                    .withStorageClassName("my-storage-class")
                    .withSelector(new LabelSelector(null, Collections.singletonMap("key", "label")))
                    .withVolumeName("pvc-ce9ebf52-435a-11e9-8fbc-06b5ff7c7748")
                .endSpec()
                .build();

        PvcOperator op = createResourceOperations(vertx, mock(KubernetesClient.class));
        op.revertImmutableChanges(current, desired);

        assertThat(current.getSpec().getStorageClassName(), is(desired.getSpec().getStorageClassName()));
        assertThat(current.getSpec().getAccessModes(), is(desired.getSpec().getAccessModes()));
        assertThat(current.getSpec().getSelector(), is(desired.getSpec().getSelector()));
        assertThat(current.getSpec().getVolumeName(), is(desired.getSpec().getVolumeName()));
    }