@Test void localSpan_JSON_V1() {
    assertThat(new String(SpanBytesEncoder.JSON_V1.encode(LOCAL_SPAN), UTF_8))
        .isEqualTo(
            "{\"traceId\":\"dc955a1d4768875d\",\"id\":\"dc955a1d4768875d\",\"name\":\"encode\",\"timestamp\":1510256710021866,\"duration\":1117,\"binaryAnnotations\":[{\"key\":\"lc\",\"value\":\"\",\"endpoint\":{\"serviceName\":\"isao01\",\"ipv4\":\"10.23.14.72\"}}]}");
  }
the following skeletal span is used in dependency linking
zipkin/src/test/java/zipkin2/codec/SpanBytesEncoderTest.java