code: function(requestParameters, next) {
      if(self.providerProvidesValidateNotReplayClient) {
        self.provider.validateNotReplayClient(requestParameters.oauth_consumer_key, requestParameters.oauth_token, requestParameters.oauth_timestamp, requestParameters.oauth_nonce, function(err, result) {
          if(err) {
            callback(new errors.OAuthUnauthorizedError('Invalid / used nonce'), null);
          } else {
            next();
          }
        });
      } else {
        self.provider.validateNotReplay(requestParameters.oauth_token, requestParameters.oauth_timestamp, requestParameters.oauth_nonce, function(err, result) {
          if(err) {
            callback(new errors.OAuthUnauthorizedError('Invalid / used nonce'), null);
          } else {
            next();
          }
        });
      }
    }
docs: Given all the requestParameters and the next step function, error out if the a replay is detected