@Override
	public Map<String, String> getMetadata() {
		return metadata;
	}
@Test
	public void testGetNacosMetadata() {
		String clusterName = "cluster";
		when(nacosContextProperties.getClusterName()).thenReturn(clusterName);
		Map<String, String> metadata = polarisRegistration1.getMetadata();
		assertThat(metadata).isNotNull();
		assertThat(metadata).isNotEmpty();
		assertThat(metadata.size()).isEqualTo(2);
		assertThat(metadata.get("nacos.cluster")).isEqualTo(clusterName);
	}