public abstract byte[] encode(MutableSpan input);
@Test void specialCharsInJson_JSON_V2() {
    assertThat(new String(encoder.encode(utf8Span), UTF_8))
        .isEqualTo(
            "{\"traceId\":\"0000000000000001\",\"id\":\"0000000000000001\",\"name\":\"\\\"\\\\\\t\\b\\n\\r\\f\",\"annotations\":[{\"timestamp\":1,\"value\":\"\\u2028 and \\u2029\"}],\"tags\":{\"\\\"foo\":\"Database error: ORA-00942:\\u2028 and \\u2029 table or view does not exist\\n\"}}");
  }