@BeforeEach void sanityCheckCodecCompatible() throws IOException {
    grpcRequest = ListOfSpans.ADAPTER.decode(SpanBytesEncoder.PROTO3.encodeList(TestObjects.TRACE));

    assertThat(SpanBytesDecoder.PROTO3.decodeList(grpcRequest.encode()))
      .containsExactlyElementsOf(TestObjects.TRACE); // sanity check codec compatible
  }
This tests that we accept messages constructed by other clients.
zipkin-server/src/test/java/zipkin2/server/internal/ITZipkinGrpcCollector.java