You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rpc_call.go
    path of file: ./repos/ethereum-development-with-go-book/code
    
    the code of the file until where you have to start completion: package main

import (
	"fmt"
	"log"

	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/rpc"
)

// https://stackoverflow.com/questions/53237759/how-to-correctly-send-rpc-call-using-golang-to-get-smart-contract-owner/53260846#53260846

func main() {
	client, err := rpc.DialHTTP("https://cloudflare-eth.com")
	if err != nil {
		log.Fatal(err)
	}
	defer clien
    
func main() {
	client, err := rpc.DialHTTP("https://cloudflare-eth.com")
	if err != nil {
		log.Fatal(err)
	}
	defer client.Close()

	type request struct {
		To   string `json:"to"`
		Data string `json:"data"`
	}

	var result string

	req := request{"0xcc13fc627effd6e35d2d2706ea3c4d7396c610ea", "0x8da5cb5b"}
	if err := client.Call(&result, "eth_call", req, "latest"); err != nil {
		log.Fatal(err)
	}

	owner := common.HexToAddress(result)
	fmt.Printf("%s\n", owner.Hex()) // 0x281017b4E914b79371d62518b17693B36c7a221e
}