BuyCryptoInfo.kt

data class BuyCryptoInfo(
  val username: String,
  val phoneNumber: PhoneNumber,
  val creditCard: CreditCard,
  val kycVerification: KycVerificationData){

  companion object{
      fun from1(user: CryptoUser): BuyCryptoInfo? = with(user){
          if(phoneNumber != null && creditCard != null && kycVerification != null) 
              BuyCryptoInfo(username, phoneNumber, creditCard, kycVerification)
              else null
      }
    
      fun from2(user: CryptoUser): BuyCryptoInfo? = with(user){
          phoneNumber?.let {
          creditCard?.let {
          kycVerification?.let { 
              BuyCryptoInfo(username, phoneNumber, creditCard, kycVerification) 
          }}}
      }
  }  
}