code: public static RateLimiterExports ofIterable(String prefix, Iterable<RateLimiter> rateLimiters) {
          return new RateLimiterExports(prefix, rateLimiters);
      }
docs: Creates a new instance of {@link RateLimiterExports} with specified metrics names prefix and
  {@link Iterable} of rate limiters.
  
  @param prefix the prefix of metrics names
  @param rateLimiters the rate limiters