public static Endpoint suffixServiceName(Endpoint endpoint, String serviceNameSuffix) {
    String prefixed = appendSuffix(endpoint.serviceName(), serviceNameSuffix);
    if (endpoint.serviceName().equals(prefixed)) return endpoint;
    return endpoint.toBuilder().serviceName(prefixed).build();
  }
Zipkin trace ids are random 64bit numbers. This creates a relatively large input to avoid
flaking out due to PRNG nuance.
zipkin-tests/src/main/java/zipkin2/TestObjects.java