How do I perform bulk inserts using pgx?

package main

import (
    "context"
    "github.com/jackc/pgx/v5"
    "log"
)

func main() {
    // Connect to the database
    conn, err := pgx.Connect(context.Background(), "postgres://username:password@localhost:5432/dbname")
    if err != nil {
        log.Fatalf("Unable to connect to database: %v", err)
    }
    defer conn.Close(context.Background())

    // Prepare the data for bulk insert
    items := [][]interface{}{
        {"value1", 100},
        {"value2", 200},
        {"value3", 300},
    }

    // Perform the bulk insert
    batch := &pgx.Batch{}
    for _, item := range items {
        batch.Queue("INSERT INTO your_table (column1, column2) VALUES ($1, $2)", item[0], item[1])
    }
    
    br := conn.SendBatch(context.Background(), batch)
    defer br.Close()

    // Process the results
    if _, err := br.Exec(); err != nil {
        log.Fatalf("Batch insert failed: %v", err)
    }

    log.Println("Bulk insert completed successfully.")
}