public Map<String, String> getContent() {
		if (CollectionUtils.isEmpty(content)) {
			content = new HashMap<>();
		}
		return content;
	}
@Test
	public void test1() {
		Assertions.assertThat(metadataLocalProperties.getContent().get("a")).isEqualTo("1");
		Assertions.assertThat(metadataLocalProperties.getContent().get("b")).isEqualTo("2");
		Assertions.assertThat(metadataLocalProperties.getContent().get("c")).isNull();
	}