rpc := flashbotsrpc.New("https://relay.flashbots.net")

// Creating a new private key here for testing, you probably want to use an existing one
privateKey, _ := crypto.GenerateKey()

// flashbots_getUserStats example
// ------------------------------
result, err := rpc.FlashbotsGetUserStats(privateKey, 13281018)
if err != nil {
    log.Fatal(err)
}
fmt.Printf("%+v\n", result)

// eth_sendBundle example
// ----------------------
sendBundleArgs := flashbotsrpc.FlashbotsSendBundleRequest{
    Txs:         []string{"YOUR_HASH"},
    BlockNumber: fmt.Sprintf("0x%x", 13281018),
}

result, err := rpc.FlashbotsSendBundle(privateKey, sendBundleArgs)
if err != nil {
    log.Fatal(err)
}
fmt.Printf("%+v\n", result)