How to use the @azure/amqp-common.randomNumberFromInterval function in @azure/amqp-common

}
        } else {
          // let us retry to send the message after some time.
          const msg =
            `[${this._context.namespace.connectionId}] Sender "${this.name}", ` +
            `cannot send the message right now. Please try later.`;
          log.error(msg);
          const amqpError: AmqpError = {
            condition: ErrorNameConditionMapper.SenderBusyError,
            description: msg
          };
          reject(translate(amqpError));
        }
      });

    const jitterInSeconds = randomNumberFromInterval(1, 4);
    const config: RetryConfig = {
      operation: sendEventPromise,
      connectionId: this._context.namespace.connectionId!,
      operationType: RetryOperationType.sendMessage,
      times: Constants.defaultRetryAttempts,
      delayInSeconds: Constants.defaultDelayBetweenOperationRetriesInSeconds + jitterInSeconds
    };

    return retry(config);
  }

}
        } else {
          // let us retry to send the message after some time.
          const msg =
            `[${this._context.namespace.connectionId}] Sender "${this.name}", ` +
            `cannot send the message right now. Please try later.`;
          log.error(msg);
          const amqpError: AmqpError = {
            condition: ErrorNameConditionMapper.SenderBusyError,
            description: msg
          };
          reject(translate(amqpError));
        }
      });

    const jitterInSeconds = randomNumberFromInterval(1, 4);
    const config: RetryConfig = {
      operation: sendEventPromise,
      connectionId: this._context.namespace.connectionId!,
      operationType: RetryOperationType.sendMessage,
      times: Constants.defaultRetryAttempts,
      delayInSeconds: Constants.defaultDelayBetweenOperationRetriesInSeconds + jitterInSeconds
    };

    return retry(config);
  }