@Test
	public void testConverterEmptyContent() {
		JsonConverter jsonConverter = new JsonConverter(objectMapper, FlowRule.class);
		List<FlowRule> flowRules = (List<FlowRule>) jsonConverter.convert("");
		assertThat(flowRules.size()).isEqualTo(0);
	}
@author <a href="mailto:fangjian0423@gmail.com">Jim</a>
spring-cloud-alibaba-starters/spring-cloud-alibaba-sentinel-datasource/src/test/java/com/alibaba/cloud/sentinel/datasource/SentinelConverterTests.java