@Test void decoderForMessage_thrift() {
    byte[] message = SpanBytesEncoder.THRIFT.encode(span1);
    assertThat(SpanBytesDecoderDetector.decoderForMessage(message))
        .isEqualTo(SpanBytesDecoder.THRIFT);
  }
Single-element reads were for legacy non-list encoding. Don't add new code that does this
zipkin/src/test/java/zipkin2/SpanBytesDecoderDetectorTest.java