Add missing return types and annotate PaymentMethodGateway.find()

The Braintree docs don't list the complete list of
payment types the library can return, the complete list
can be found in braintree.payment_method_parser

Author: cuu508

stubs/braintree/braintree/payment_method.pyi

@@ -1,12 +1,18 @@
 from _typeshed import Incomplete
 
+from braintree.amex_express_checkout_card import AmexExpressCheckoutCard
 from braintree.android_pay_card import AndroidPayCard
 from braintree.apple_pay_card import ApplePayCard
 from braintree.credit_card import CreditCard
 from braintree.error_result import ErrorResult
+from braintree.europe_bank_account import EuropeBankAccount
+from braintree.masterpass_card import MasterpassCard
 from braintree.paypal_account import PayPalAccount
 from braintree.resource import Resource
+from braintree.samsung_pay_card import SamsungPayCard
+from braintree.sepa_direct_debit_account import SepaDirectDebitAccount
 from braintree.successful_result import SuccessfulResult
+from braintree.unknown_payment_method import UnknownPaymentMethod
 from braintree.us_bank_account import UsBankAccount
 from braintree.venmo_account import VenmoAccount
 from braintree.visa_checkout_card import VisaCheckoutCard
@@ -17,7 +23,21 @@ class PaymentMethod(Resource):
     @staticmethod
     def find(
         payment_method_token: str,
-    ) -> AndroidPayCard | ApplePayCard | CreditCard | PayPalAccount | UsBankAccount | VenmoAccount | VisaCheckoutCard: ...
+    ) -> (
+        AndroidPayCard
+        | ApplePayCard
+        | EuropeBankAccount
+        | CreditCard
+        | PayPalAccount
+        | UsBankAccount
+        | VenmoAccount
+        | VisaCheckoutCard
+        | AmexExpressCheckoutCard
+        | SepaDirectDebitAccount
+        | MasterpassCard
+        | SamsungPayCard
+        | UnknownPaymentMethod
+    ): ...
     @staticmethod
     def update(payment_method_token: str, params) -> SuccessfulResult | ErrorResult: ...
     @staticmethod

stubs/braintree/braintree/payment_method_gateway.pyi

@@ -1,15 +1,43 @@
 from _typeshed import Incomplete
 
+from braintree.amex_express_checkout_card import AmexExpressCheckoutCard
+from braintree.android_pay_card import AndroidPayCard
+from braintree.apple_pay_card import ApplePayCard
+from braintree.credit_card import CreditCard
 from braintree.error_result import ErrorResult
-from braintree.resource import Resource
+from braintree.europe_bank_account import EuropeBankAccount
+from braintree.masterpass_card import MasterpassCard
+from braintree.paypal_account import PayPalAccount
+from braintree.samsung_pay_card import SamsungPayCard
+from braintree.sepa_direct_debit_account import SepaDirectDebitAccount
 from braintree.successful_result import SuccessfulResult
+from braintree.unknown_payment_method import UnknownPaymentMethod
+from braintree.us_bank_account import UsBankAccount
+from braintree.venmo_account import VenmoAccount
+from braintree.visa_checkout_card import VisaCheckoutCard
 
 class PaymentMethodGateway:
     gateway: Incomplete
     config: Incomplete
     def __init__(self, gateway) -> None: ...
     def create(self, params: dict[str, Incomplete] | None = None) -> SuccessfulResult | ErrorResult: ...
-    def find(self, payment_method_token: str) -> Resource: ...
+    def find(
+        self, payment_method_token: str
+    ) -> (
+        AndroidPayCard
+        | ApplePayCard
+        | EuropeBankAccount
+        | CreditCard
+        | PayPalAccount
+        | UsBankAccount
+        | VenmoAccount
+        | VisaCheckoutCard
+        | AmexExpressCheckoutCard
+        | SepaDirectDebitAccount
+        | MasterpassCard
+        | SamsungPayCard
+        | UnknownPaymentMethod
+    ): ...
     def update(self, payment_method_token: str, params) -> SuccessfulResult | ErrorResult: ...
     def delete(self, payment_method_token: str, options=None) -> SuccessfulResult: ...
     options: dict[str, Incomplete]