public void setClusters(Map<String, ClusterMetadata> clusters) {
        this.clusters = clusters;
    }
@Test
    void testSetClusters() {
        Map<String, ClusterMetadata> clusters = new HashMap<>();
        clusters.put("key", clusterMetadata);
        serviceMetadata.setClusters(clusters);
        
        Map<String, ClusterMetadata> map = serviceMetadata.getClusters();
        assertNotNull(map);
        assertEquals(1, map.size());
    }