void initZipkinKafkaCollectorPropertiesOverrideTest(String property, Object value,
    Function<KafkaCollector.Builder, Object> builderExtractor) {
    this.property = property;
    this.value = value;
    this.builderExtractor = builderExtractor;
  }
to allow us to define with a lambda
zipkin-server/src/test/java/zipkin2/collector/kafka/ZipkinKafkaCollectorPropertiesOverrideTest.java