How do I use prepared statements using GORM?

package main

import (
    "github.com/jinzhu/gorm"
    _ "github.com/jinzhu/gorm/dialects/sqlite"
    "log"
)

type User struct {
    ID   uint   `gorm:"primary_key"`
    Name string `gorm:"size:255"`
    Age  uint
}

func main() {
    db, err := gorm.Open("sqlite3", "test.db")
    if err != nil {
        log.Fatal(err)
    }
    defer db.Close()

    // Migrate the schema
    db.AutoMigrate(&User{})

    // Prepare statement
    stmt, err := db.DB().Prepare("INSERT INTO users (name, age) VALUES (?, ?)")
    if err != nil {
        log.Fatal(err)
    }
    defer stmt.Close()

    // Execute prepared statement
    _, err = stmt.Exec("Alice", 30)
    if err != nil {
        log.Fatal(err)
    }

    log.Println("User added successfully")
}