public DocServiceBuilder exampleHeaders(String serviceName, String methodName,
                                            Iterable<? extends HttpHeaders> exampleHeaders) {
        requireNonNull(serviceName, "serviceName");
        checkArgument(!serviceName.isEmpty(), "serviceName is empty.");
        requireNonNull(methodName, "methodName");
        checkArgument(!methodName.isEmpty(), "methodName is empty.");
        requireNonNull(exampleHeaders, "exampleHeaders");
        return exampleHeaders0(serviceName, methodName, exampleHeaders);
    }
Adds the example {@link HttpHeaders} for the method with the specified service and method name.
core/src/main/java/com/linecorp/armeria/server/docs/DocServiceBuilder.java