def METHOD_NAME(self):
    """
    Test that kubernetes section of the model is merged into the
    domain resource file correctly.
    """
    documents = self._merge_and_read('k8s-model-v4.yaml', 'wko-domain-v4.yaml',
                                     model_crd_helper.WKO_PRODUCT_KEY, model_crd_helper.WKO_VERSION_4)
    self._match_values("Document count", len(documents), 4)
    domain_resource = documents[0]
    # check simple fields
    self._check_domain_crd(domain_resource)
    # only one cluster was added
    cluster_list = self._traverse(domain_resource, 'spec', 'clusters')
    self._match_values("Domain cluster count", len(cluster_list), 3)
    self._match_values("Third domain cluster name", cluster_list[2]['name'], 'cluster3')
    # replica count of the first cluster was overridden
    cluster_resource = documents[1]
    replica_count = self._traverse(cluster_resource, 'spec', 'replicas')
    self._match_values("First cluster replicas", replica_count, 999)