User.findById(id,callback?)
const id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
User.findById(id,(callback) => {
console.log(callback)
/*
{
id: 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
name: 'John'
surname: 'Doe',
age: 18,
updatedAt: 1970-01-01T00:00:00.000Z,
createdAt: 1970-01-01T00:00:00.000Z
}
*/
})