@Override
    public Set<K8sNode> completeNodes() {
        Set<K8sNode> nodes = nodeStore.nodes().stream()
                .filter(node -> node.state() == COMPLETE)
                .collect(Collectors.toSet());
        return ImmutableSet.copyOf(nodes);
    }
@Test
    public void testGetCompleteNodes() {
        assertEquals(ERR_SIZE, 1, target.completeNodes().size());
        assertTrue(ERR_NOT_FOUND, target.completeNodes().contains(MINION_3));
    }