code: public LastRateLimitInfo getLastRateLimitInfo(ApiAction action, HttpRequestMethod method) {
          return lastRateLimitInfoMap.get(new ApiActionHttpMethod(action, method));
      }
docs: Gets the X-Rate-Limit-* headers from the last response for the given action / method, stored as a POJO.
  @param action
  @param method
  @return POJO storing X-Rate-Limit-* headers from last invocation. Returns null if this object has never invoked the given action / method.