change visibility for gson enum serializer & deserializer from public to default
create AddressBuilder
create BcaKlikbcaBuilder
change BcaKlikbca to interface
change Address to interface
create BcaKlikpayBuilder
change BcaKlikpay to interface
create builder & interface for CaptureRequest
create builder & interface for CimbClicks
create builder & interface for CreditCard
create builder & interface for CustomerDetails
create builder & interface for Item
create builder & interface for MandiriClickpay
create builder & interface for MerchantInfo
create builder & interface for PaymentRequest
create builder & interface for SettlementRequest
create builder & interface for TransactionDetails
create builder & interface for VtLink
create builder & interface for VtWeb
create builder & interface for XLPotongPulsa