How to validate slice of struct ?

[mdsohelmia]

  type User struct {
      FirstName string
      LastName string
      Address AddressSliceWrapper
  }

  type Address struct {
      IsMailing bool 
  }

  type Addresses []Address

// AddressSliceWrapper embeds the alias type for the sake of embedding a slice. // This is very heavy-handed.

type AddressSliceWrapper struct {
    Addresses
}