public String getLabel(String labelKey) {
		Map<String, String> routerLabels = labels.get(RouterConstant.ROUTER_LABELS);
		if (CollectionUtils.isEmpty(routerLabels)) {
			return StringUtils.EMPTY;
		}
		return routerLabels.get(labelKey);
	}
@Test
	public void testGetLabel() {
		Map<String, String> labels = new HashMap<>();
		labels.put("k1", "v1");
		labels.put("k2", "v2");
		labels.put("k3", "v3");

		PolarisRouterContext routerContext = new PolarisRouterContext();
		routerContext.putLabels(RouterConstant.ROUTER_LABELS, labels);

		String resolvedLabel = routerContext.getLabel("k1");
		assertThat(resolvedLabel).isEqualTo("v1");
	}