AI-generated Key Takeaways
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          The content contains the Wallet Client for Google Play services. 
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          It includes annotations for various Wallet-related constants and modes, such as CreateMode,CardClass,BillingAddressFormat, andPaymentMethod.
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          The content outlines interfaces like AutoResolvableResultfor handling tasks that may require showing UI.
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          Several classes are detailed, including those for managing card information, creating wallet objects, handling payment data, and interacting with the Google Pay API through PaymentsClient.
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          It also describes classes related to gift cards, loyalty programs, offers, and payment card recognition. 
Annotations
| CreateWalletObjectsRequest.CreateMode | The creation mode to use. | 
| InstrumentInfo.CardClass | Card class indicates whether it is a credit, debit or prepaid card. | 
| WalletConstants.BillingAddressFormat | The Google Pay API will collect the billing address for you if required. | 
| WalletConstants.CardClass | Card class indicates whether it is a credit, debit, or prepaid card. | 
| WalletConstants.CardNetwork | Credit card networks. | 
| WalletConstants.PaymentCardRecognitionType | The OCR input types for OCR 3P API. | 
| WalletConstants.PaymentMethod | The payment methods you support. | 
| WalletConstants.PaymentMethodTokenizationType | Payment method tokenization types. | 
| WalletConstants.TotalPriceStatus | The status of the total price used in TransactionInfo. | 
Interfaces
| AutoResolvableResult | Marks Taskresults
            which may involve showing UI to be resolved throughResolvableApiExceptionand that support automatic resolution through the use ofAutoResolveHelper. | 
Classes
| AutoResolvableVoidResult | A Void result that is an AutoResolvableResult. | 
| AutoResolveHelper | Helper to auto resolve Tasks that may
            throwResolvableApiExceptionto request UI being shown before returning the result. | 
| CardInfo | Parcelable representing more detailed information about a payment card. | 
| CardRequirements | Card requirements for the returned payment card. | 
| CardRequirements.Builder | Builder to create a CardRequirements. | 
| CreateWalletObjectsRequest | Parcelable representing request to create wallet objects. | 
| CreateWalletObjectsRequest.Builder | Builder to create a CreateWalletObjectsRequest. | 
| CreditCardExpirationDate | A Parcelablethat represents the Date passed back from Google Payment API. | 
| GiftCardWalletObject | Parcelable representing a gift card wallet object. | 
| GiftCardWalletObject.Builder | Builder for GiftCardWalletObject. | 
| InstrumentInfo | Parcelable representing more detailed information about a payment instrument. | 
| IsReadyToPayRequest | A Parcelablerequest that can optionally be passed to
            PaymentsClient.isReadyToPay(IsReadyToPayRequest)to specify additional
            filtering criteria for determining if a user is considered ready to
            pay. | 
| IsReadyToPayRequest.Builder | This class is deprecated. Use the JSON request
            format instead, see 
            IsReadyToPayRequest.fromJson(String). | 
| LoyaltyWalletObject | Parcelable representing a loyalty wallet object. | 
| LoyaltyWalletObject.Builder | Builder to create a LoyaltyWalletObject. | 
| OfferWalletObject | Parcelable representing an offer wallet object. | 
| OfferWalletObject.Builder | Builder to create a OfferWalletObject. | 
| PaymentCardRecognitionIntentRequest | A Parcelablerequest to the
            PaymentsClient.getPaymentCardRecognitionIntent(PaymentCardRecognitionIntentRequest)API to get aPendingIntentof the Google payment card recognition Activity. | 
| PaymentCardRecognitionIntentRequest.Builder | Builder to create a 
            PaymentCardRecognitionIntentRequestinstance. | 
| PaymentCardRecognitionIntentResponse | A Parcelablethat represents a response from the
            PaymentsClient.getPaymentCardRecognitionIntent(PaymentCardRecognitionIntentRequest)API to get aPendingIntentfor the Google payment card recognition Activity. | 
| PaymentCardRecognitionResult | A Parcelablethat represents the result passed back from Google payment card recognition Activity
            when a payment card has been successfully recognized. | 
| PaymentData | Parcelable representing a payment data response, which contains the necessary payment result to complete the payment. | 
| PaymentDataRequest | Parcelable representing a payment data request, which provides necessary information to support a payment. | 
| PaymentDataRequest.Builder | This class is deprecated. Use the JSON request
            format instead, see 
            PaymentDataRequest.fromJson(String). | 
| PaymentInstrumentType | Payment instrument types that a merchant can support. | 
| PaymentMetadata | A Parcelableresponse that is returned by
            PaymentsClient.getPaymentMetadata(PaymentMetadataRequest)which contains
            metadata describing the user's preferred payment method. | 
| PaymentMetadataRequest | A Parcelablerequest that is passed into
            PaymentsClient.getPaymentMetadata(PaymentMetadataRequest)to specify
            additional filtering criteria for determining if a user has a payment method that can
            be used to checkout. | 
| PaymentMethodToken | Parcelable representing payment method token. | 
| PaymentMethodTokenizationParameters | Tokenization parameters that the integrator passes to tokenize the credit card that the user selects. | 
| PaymentMethodTokenizationParameters.Builder | Builder to create a 
            PaymentMethodTokenizationParameters. | 
| PaymentsClient | Client for interacting with the Google Pay API. | 
| ShippingAddressRequirements | Optional shipping address requirements for the returned shipping address. | 
| ShippingAddressRequirements.Builder | Builder to create a ShippingAddressRequirements. | 
| TransactionInfo | Parcelable representing the detailed info about the transaction. | 
| TransactionInfo.Builder | Builder to create a TransactionInfo. | 
| Wallet | The main entry point for Wallet library integration. | 
| Wallet.WalletOptions | Options for using the Wallet API. | 
| Wallet.WalletOptions.Builder | Wallet builder. | 
| WalletConstants | Collection of constant values used by the ClientLibrary. | 
| WalletObjectsClient | Entry point for Wallet objects functionality. |