@Test void toStringContainsOnlySummaryInformation() {
    try (KafkaCollector collector = builder("muah").build()) {
      collector.start();

      assertThat(collector).hasToString(
        "KafkaCollector{bootstrapServers=%s, topic=%s}".formatted(kafka.bootstrapServer(),
          "muah")
      );
    }
  }
The {@code toString()} of {@link Component} implementations appear in health check endpoints.
Since these are likely to be exposed in logs and other monitoring tools, care should be taken
to ensure {@code toString()} output is a reasonable length and does not contain sensitive
information.
zipkin-collector/kafka/src/test/java/zipkin2/collector/kafka/ITKafkaCollector.java