@Test
    void jsonTextSequences_publisher() throws Exception {
        expectJsonSeqContents(Flux.fromArray(TEST_STRINGS))
                .expectComplete()
                .verify();

        // With trailers.
        final HttpHeaders trailer = HttpHeaders.of(AsciiString.of("x-trailer"), "value");
        expectJsonSeqContents(Flux.fromArray(TEST_STRINGS), JSON_SEQ_HEADERS, trailer)
                .expectNext(trailer)
                .expectComplete()
                .verify();
    }
{@link HttpData} instances which are expected to be produced by the
{@link JacksonResponseConverterFunction} when the function gets the
{@link #TEST_STRINGS} as input.
core/src/test/java/com/linecorp/armeria/server/annotation/JacksonResponseConverterFunctionTest.java