public DocServiceBuilder exampleHeaders(String serviceName, HttpHeaders... exampleHeaders) {
        requireNonNull(exampleHeaders, "exampleHeaders");
        return exampleHeaders(serviceName, ImmutableList.copyOf(exampleHeaders));
    }
Adds the example {@link HttpHeaders} for the service with the specified name.
core/src/main/java/com/linecorp/armeria/server/docs/DocServiceBuilder.java